Arp
At the top of the image NGC 2857 (Arp 1) can be seen.
Near the center of the image is NGC 2856 and diagonally to the right below it is NGC 2854. Together they form the galaxy pair Arp 285.
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The galaxy is accompanied by PGC 6629 (left of it).
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In the center is the galaxy NGC 2537.
To the left is the galaxy NGC 2537A.
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To the right is NGC 2523B.
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Presumably the galaxy interacts with UGC 719 (larger galaxy on the upper left).
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Marekmazuch, CC BY-SA 4.0, via Wikimedia Commons
On the right is NGC 3628.
On the left is M66 and below it M65.
The three galaxies are called the Leo Triplet (Arp 317).
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Jeffjnet (http://jeffjastro.com), CC BY-SA 3.0, via Wikimedia Commons
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ESO, CC BY 3.0, via Wikimedia Commons, Original-Link
In the center of the image is NGC 4618 (Arp 23) in whose one spiral arm are IC 3668 and IC 3669 (0.02' large cluster of stars with emission nebula - not seen here).
Above left is NGC 4625 (IC 3675).
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The unusual spiral arm is created by PGC 32784 (small galaxy on the left) with which the galaxy is gravitationally bound.
In the center of the image is the lenticular galaxy NGC 2300.
To its right is NGC 2276.
Keesscherer, CC BY-SA 4.0, via Wikimedia Commons
.jpg){kind=link}
The galaxy on the lower right is the Fire Wheel Galaxy M101.
In the upper left corner is NGC 5474.
Yu-Hang Kuo, CC BY-SA 2.0, via Wikimedia Commons
The star cluster on the lower right is NGC 6939.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 4.0, via Wikimedia Commons
The galaxy pair consists of the galaxies NGC 6365A (round galaxy) and NGC 6365B (elongated galaxy).
To the right of the center of the image is the elliptical galaxy NGC 680.
Directly to the right is NGC 678.
Left below the center of the image is IC 167 (Arp 31) and diagonally right below it is NGC 691.
At the top left of the screen is NGC 697 (NGC 674).
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In the center of the image is Arp 33 (UGC 8613 / PGC 48118). In the Arp catalog it is classified as a spiral galaxy. According to current knowledge, it is an interacting pair of galaxies with galaxy VV 6b, which is adjacent in the upper right. (http://Simbad.u-strasbg.fr/SIMBAD/sim-id?Ident=%402165745&Name=VV%20%20%20%206b&submit=submit). The galaxy pair belongs to the Arp 326 galaxy group.
Below is PGC 214126.
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In the center of the image is NGC 4615 (Arp 34).
Above it on the right is NGC 4613.
Below it on the right is NGC 4614.
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Above is the galaxy NGC 1055.
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The small galaxy at the bottom interacting with NGC 1347 is PGC 816443.
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The small galaxy at the bottom interacting with IC 4271 is PGC 3096774.
The small galaxy at the left end of the spiral arm is NGC 1232A (PGC 11834).
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Together with irregular galaxy IC 4526 (above right), NGC 5829 (large galaxy) forms the galaxy pair Arp 42.
Together with galaxies PGC 53702 (right above), PGC 53703 (diagonally right above), and PGC 53720 (diagonally left above), the five galaxies form HCG 73.
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Together with galaxy PGC 1097822 (the small galaxy directly below) they form the galaxy pair Arp 44.
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In the center of the image is Arp 46.
The galaxy to its left is PGC 71753.
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The galaxy diagonally to the left below is PGC 1572649.
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In the upper left is NGC 7828 (Arp 144).
Below it on the right is Arp 51.
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The small galaxy to the right is PGC 9107.
The slim galaxy below is PGC 1054370.
To the left of it is PGC 1054693.
At the top right is PGC 9103.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
In the center of the image is Arp 55 consisting of PGC 26132 (large middle portion) and PGC 3098124 (right portion).
Above it on the left is PGC 2242096 and above it is PGC 82353.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
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The galaxy on the right is Arp 57.
The galaxy diagonally to the left below is PGC 46234.
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At the end of the spiral arm is the elliptical galaxy PGC 23937.
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At the end of the spiral arm is the irregular galaxy PGC 3627.
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To the left of the image center is Arp 60, and obliquely to the right is Arp 196.
In SIMBAD the coordinates for the two obejcts are wrongly deposited.
At the left edge of the image is PGC 1762948.
At the bottom center is PGC 1762076.
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The pair of galaxies at the top is Arp 129.
At the bottom is the galaxy triplet NGC 2944 (Arp 63).
At the end of the spiral arms are the galaxies PGC 1990710 (lower left) and PGC 27534 (right).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The galaxy interacts with galaxies PGC 214322 (above) and VV 471b (right) at the end of its spiral arms.
The galaxy below is PGC 214323.
Jschulman555, CC BY-SA 4.0, via Wikimedia Commons
_and_other_galaxies.jpg){kind=link}
At the very top is NGC 83.
To the left is NGC 985 with galaxy IC 1546 below it.
Even farther to the left the slim horizontal galaxy is NGC 86.
In the center is NGC 90 and below it NGC 93 (together they form Arp 65).
In the lower left corner is NGC 96.
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The galaxy in the upper right is PGC 214497.
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The galaxy to the right is PGC 4880.
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Together with the underlying lenticular galaxy PGC 214249 they form Arp 69.
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At the end of the right spiral arm is PGC 212740.
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On the left is Arp 272 (consisting of NGC 6050 (left) and IC 1179 (right)).
Here there is a discrepancy in the Arp catalog. On the photo plate the galaxies NGC 6050 and IC 1179 are shown but in his table he puts NGC 6054 as target.
The online catalogs SIMBAD and Vizier have taken the table value, Wikipedia the galaxy pair.
At the left edge NGC 6054 can be seen.
On the right is the galaxy NGC 6045, which together with PGC 84720 (NGC 6045B - on the left edge of the galaxy) forms Arp 71.
All three are part of the Hercules Cluster Abell 2151.
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The large galaxy is NGC 5996, the small one NGC 5994.
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At the end of one spiral arm is PGC 2277264 (left).
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Above M90 is the galaxy IC 3583.
The small white dot in the right spiral arm is NGC 1097A.
The large galaxy in the center of the image is NGC 772.
The small galaxy below is NGC 770.
Together they form the interacting pair of glaxies Arp78.
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The large galaxy is IC 983, and the small galaxy to the right below is IC 982. Together they form Arp 117.
At the bottom of the image is NGC 5490C (Arp 79).
The upper galaxy is NGC 2633.
Below is the galaxy NGC 2634 below which is NGC 2634A.
The upper part is NGC 6622, the lower NGC 6621.
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The upper larger galaxy is NGC 2535, the lower small galaxy is NGC 2536.
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The left galaxy is NGC 3800, the right galaxy is NGC 3799.
The upper one is NGC 5394, the lower large one is NGC 5395.
Giuseppe Donatiello from Oria (Brindisi), Italy, CC0, via Wikimedia Commons
The large knot at the end of one spiral arm is the irregular galaxy NGC 5195.
The large galaxy is NGC 7753, the small galaxy right below is NGC 7752.
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The lower galaxy is NGC 3808, the upper galaxy is NGC 3808B.
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To the right of the center of the image is Arp 88.
At the top of the edge, PGC 1410939 can be seen.
On the left is the pair of galaxies Arp 119, with the upper galaxy being PGC 4748, and the lower galaxy being PGC 4750.
At the bottom of the image is PGC 73921.
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The large galaxy is NGC 2648, and the small one on the left is PGC 24469.
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The galaxy on the left is NGC 5930, the galaxy on the right is NGC 5929.
The galaxy on the upper left is PGC 55095.
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The galaxy on the left is NGC 5954, the galaxy on the right is NGC 5953.
The galaxy at the bottom is PGC 55478.
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The large galaxy is NGC 7603, the small galaxy at the left spiral arm is NGC 7603B (PGC 71041).
It is not entirely clear whether the two galaxies interact.
According to the data of the NED database the two galaxies are located at different distances from Earth (NGC 7603 about 400 Mio. Ly. (121 Mpc), NGC 7603 about 780 million yr. (240 Mpc)
http://ned.ipac.caltech.edu/byname?objname=NGC+7603&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1
http://ned.ipac.caltech.edu/byname?objname=NGC+7603B&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1
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The right part is NGC 7284, the left is NGC 7285.
At the top is NGC 3226 at the bottom is NGC 3227, together they form Arp 94.
On the right edge, NGC 3222 can still be seen very small.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The galaxy on the right is IC 4461, and the elliptical galaxy on the left is IC 4462 (PGC 52123).
In the original papers, Arp writes among the remarks that he suspected an interaction but could not see one.
Below the pair of galaxies is PGC 52120.
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The long spiral galaxy is PGC 38325 interacting with PGC 38327 (above).
The small galaxy to the left is PGC 38307.
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The long spiral galaxy is PGC 5715 interacting with PGC 5714 (right).
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Below the center of the image is NGC 7550 and centered above is galaxy NGC 7549. The two galaxies form Arp 99.
To the left of NGC 7549 is NGC 7553.
To the right is NGC 7547.
At the bottom left is NGC 7558.
All five galaxies form the galaxy group HCG 93.
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The small dot below IC 18 is the elliptical galaxy IC 19. Together they form Arp 100.
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The long spiral galaxy is UGC 10169 which interacts with UGC 10164 (below).
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Arp 102 consists of galaxies PGC 60067 (below), PGC 60070 (the large galaxy above), and PGC 60073 (the bright region just inside the spiral arm below the upper galaxy).
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In the center of the image is PGC 59061 with the small galaxy PGC 59062 directly to its right.
Diagonally above is PGC 59065.
At the very top is NGC 5218, which is connected to the galaxy below, NGC 5216, by a faint bridge. Together they form the galaxy pair Arp 104 (Keenan's System).
Below is the galaxy NGC 5205.
Abell 1185 consists of 82 galaxies including:
Arp 105 (NGC 3561 (the lower galaxy image center) and NGC 3561A (also PGC 33992 above)) (The Guitar).
NGC 3550
NGC 3552, NGC 3553, NGC 3554
NGC 3558
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The upper galaxy is NGC 4211, below it the small galaxy NGC 4211A.
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The left galaxy is PGC 32628, the right galaxy PGC 32620.
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The lower galaxy is PGC 11491, the right galaxy PGC 11493.
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The left galaxy is PGC 56063, the right galaxy is PGC 56057.
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The left galaxy is PGC 69956, the right galaxy is PGC 913872.
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The upper galaxy is NGC 5421A (PGC 49950), the lower galaxy is NGC 5421B (PGC 49949).
The small blue galaxy below is PGC 2039203.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 4.0, via Wikimedia Commons
The galaxy on the left is NGC 7805.
The galaxy on the right is NGC 7806.
Together they form the galaxy pair Arp 112.
The small galaxy on the right is PGC 111.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 3.0, via Wikimedia Commons
The three galaxies in the center of the image are NGC 70 (right), NGC 71 (top) and NGC 68 (left). NGC 68 is thought not to belong to this group because it is 40 million kilometers closer to Earth.
In the lower left, next to NGC 68, is NGC 67 and again to its left NGC 67A (the two small galaxies).
At the top left of NGC 71 is NGC 69 (small galaxy) and the large galaxy above the three galaxies is NGC 72 above which is still very small NGC 72A.
The small galaxy directly above NGC 72A is PGC 1887599.
Diagonally to the right above the cluster of galaxies is NGC 74, but it is not part of Arp 113.
In the center of the image is the lenticular galaxy NGC 2300.
To its right is NGC 2276.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The upper galaxy is PGC 36403.
Directly below it is PGC 36379.
The lower galaxy is PGC 36392.
On the lower left is M60. Above it on the right is NGC 4647.
Together they form the pair of galaxies Arp 116.
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The large galaxy is IC 983, and the small galaxy below it on the right is IC 982. Together they form Arp 117.
At the bottom of the image is NGC 5490C (Arp 79).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 1141 (also NGC 1143) is the upper galaxy, interacting strongly with NGC 1144 (also NGC 1142).
To the right above the two galaxies is PGC 1150350.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
To the right of the center of the image is Arp 88.
At the top of the edge is PGC 1410939.
On the left is the pair of galaxies Arp 119, the upper galaxy being PGC 4748 and the lower galaxy being PGC 4750.
At the bottom of the image is PGC 73921.
Jschulman555, CC BY-SA 4.0, via Wikimedia Commons
The upper galaxy is NGC 4435, and the lower is NGC 4438.
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The right galaxy is PGC 3547, and the upper left galaxy is PGC 3553.
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The upper galaxy is NGC 6040, the lower galaxy is PGC 56942.
Below on the left is NGC 6041 and below that is NGC 6042.
The galaxies are part of the Hercules Galaxy Cluster Abell 2151.
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NGC 1888 is the elongated spiral galaxy next to whose center is NGC 1889.
The galaxy in the upper left is PGC 17217.
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The galaxy in the center of the image is NGC 6361.
Diagonally below it on the right is galaxy PGC 60040.
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The left galaxy is PGC 7417, the right one PGC 7415.
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NGC 191 is the upper spiral galaxy interacting with the galaxy iC 1563 below.
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The galaxy on the left is PGC 200189, the one on the right is PGC 4645.
The galaxy to its left is PGC 1465229.
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The pair of galaxies at the top is Arp 129.
At the bottom is the galaxy triplet NGC 2944 (Arp 63).
At the end of the spiral arms are galaxies PGC 1990710 (lower left) and PGC 27534 (right).
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The lower galaxy is PGC 177, the upper PGC 178.
Below the pair of galaxies at the bottom of the image is IC 5379.
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PGC 10564 can be seen on the upper left, PGC 10561 on the lower right.
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PGC 1076659 can be seen on the left, PGC 34639 on the right.
The galaxy to the left of the pair of galaxies is PGC 114716.
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NGC 541 is a member of the galaxy cluster Abell 194.
The small blue galaxy to the left of NGC 541 is named Minkowski's Object.
Diagonally above it on the left is the pair of galaxies Arp 308 (NGC 545 above, NGC 547 below).
Together with the irregular galaxy UGC 7636 (diagonally left below the spot directly next to the star) M49 forms the entry Arp 134.
NGC 1023A is on the left edge of the galaxy and is almost completely merged into the galaxy.
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Below the center of the image is NGC 5820 (Arp 136).
Diagonally above it on the left is NGC 5821.
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To the right of the center of the image is the large galaxy NGC 2911 (Arp 232).
Diagonally below it on the left is NGC 2914 (Arp 137).
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PGC 1786426 can be seen on the left, and PGC 45463 on the right.
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NGC 275 can be seen on the lower left, NGC 274 on the upper right.
The galaxy at the top of the rim is UGC 3717.
To the right of Arp 141, very small UGC 3705 can still be seen.
Kevin Gill from Los Angeles, CA, United States, CC BY 2.0, via Wikimedia Commons
.jpg){kind=link}
The galaxy in the center of the image is NGC 2936, the lower one is NGC 2937.
At the top center of the image is the galaxy PGC 1237172.
The lower section is the irregular galaxy NGC 2445, the upper section is the lenticular galaxy NGC 2444.
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At upper left is NGC 7828 (Arp 144).
Below it on the right is Arp 51.
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At the lower left is PGC 9062, and above it on the right with the doughnut shape is PGC 9060.
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PGC 510 can be seen in the lower left, and PGC 509 is above it on the right.
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Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 4.0, via Wikimedia Commons
The blue galaxy at the top is PGC 2171379.
The pair of galaxies Arp 148 can be seen at the bottom.
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In the center of the image is the interacting galaxy pair Arp 150 consisting of NGC 7609 (top) and PGC 71077 (bottom).
To the right below is PGC 71074.
To the left below is PGC 71080.
All four galaxies form the galaxy group HCG 95.
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The galaxy on the right is PGC 2468185.
M87 has a jet to the side, which is visible in different waves.
It is the galaxy where a photo of a black hole was first captured.
Dylan O' Donnell, deography.com, CC0, via Wikimedia Commons
On the right the large galaxy is NGC 1316 (Arp 154).
Directly to the left is NGC 1317.
Centered on the left edge is NGC 1326.
Below that in the left corner is the pair of galaxies NGC 1326A (top) and NGC 1326B (bottom).
solomon from USA, CC BY 2.0, via Wikimedia Commons
.png){kind=link}
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In the center is NGC 4725.
To the right is NGC 4712.
In the upper left is NGC 4747.
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In the center of the image is NGC 3414.
Above it NGC 3418 can be seen.
At the bottom of the image is PGC 32532.
Judy Schmidt from USA, CC BY 2.0, via Wikimedia Commons
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The galaxy to the left of NGC 455 is PGC 4583.
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It is not entirely clear whether these two galaxies are interacting with each other
According to the measurements in the current databases for NGC 2672 - right galaxy (http://ned.ipac.caltech.edu/byname?objname=NGC+2672&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1) and NGC 2673 - left galaxy (http://ned.ipac.caltech.edu/byname?objname=NGC+2673&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1), the two galaxies are at different distances from Earth, although measurement errors must also be considered here.
However, it may also be that the two galaxies rotate around each other at a large distance, and the difference in redshift is caused by the Doppler effect.
Starhopper, CC BY-SA 4.0, via Wikimedia Commons
The galaxy to the right of Andromeda in the image of M31.
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On the right is NGC 7236, in the middle is NGC 7237, and on the far left is NGC 7237C.
The galaxy above is PGC 214811.
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Arp 170 is in the center of the image and consists of the two galaxies NGC 7578A (lower right) and NGC 7578B above left.
Arp 170 is part of HCG 94, a galaxy group consisting of seven galaxies and continues above Arp 170 with galaxies NGC 7578C, (just to the left of Arp 170), PGC 70937 (above NGC 7578C), PGC 70943 (the large galaxy to its left), PGC 70939 (to the right of PGC 70943), and PGC 70941 (above PGC 70943).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 5718 is the galaxy on the left, IC 1042 is the galaxy on the right.
Obliquely below it on the right is IC 1039.
The larger galaxy below is IC 1041.
Diagonally above it on the left is PGC 52451.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
At the top is IC 1178.
Below that is IC 1181.
The galaxy to its left is PGC 84724.
The pair of galaxies belongs to the galaxy cluster Abell 2151.
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The galaxy pair consists of galxie NGC 3068A (image center and NGC 3068B (PGC 87670 - oblique right below).
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The galaxy group consists of the three galaxies IC 3481 (upper right), IC 3481A (diagonally lower left next to it) and IC 3483 (lower left below the bright star).
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The large galaxy is NGC 4933 (IC 4176).
The right tail IC 4173, interacting with NGC 4933.
Just to the left, the blue dot, is PGC 45143 (NGC 4933C), but it probably does not interact with the pair of galaxies. (https://de.wikipedia.org/wiki/NGC_4933)
The galaxy on the far left is IC 4134
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The one on the right is PGC 53371, the one on the left is PGC 53372.
The small galaxy to the right is PGC 1711277.
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NGC 5614 is the large spiral galaxy in the center of the image at whose upper edge within the spiral arms is the galaxy NGC 5615.
Above it is NGC 5613.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
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Since the galaxy has two widely extending arms, it is thought that it is probably the result of the merger of two galaxies. (https://de.wikipedia.org/wiki/Arp_180)
NGC 3212 is the galaxy on the right, NGC 3215 is the galaxy on the left.
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The large galaxy on the right is NGC 7674, which forms the Arp 182 galaxy pair with the galaxy NGC 7674A, which is directly oblique to the upper left.
Together with the small galaxy PGC 71507 (diagonally below on the left) and the galaxy NGC 7675 (on the left), the galaxy form the galaxy group HCG 96.
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The galaxy to the left is UGC 3342.
Below that is UGC 3344.
In the lower left corner are the galaxies UGC 3349A (right) and UGC 3349 (left).
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R. Jay GaBany, CC BY-SA 3.0, via Wikimedia Commons
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PGC 10755 is the lower galaxy, PGC 200206 is the upper galaxy.
The galaxy below is PGC 10738.
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PGC 33670 is the right galaxy, PGC 33677 is the left galaxy.
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Judy Schmidt from USA, CC BY 2.0, via Wikimedia Commons
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To the left of the image center is Arp 60, diagonally to the right is Arp 196.
In SIMBAD the coordinates for the two objects are wrongly deposited.
At the left edge of the image is PGC 1762948.
At the bottom center is PGC 1762076.
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NGC 5544 is the right galaxy, NGC 5545 the left galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
On the left is NGC 1134, on the right is PGC 10907.
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PGC 1503 is the upper galaxy, PGC 1504 the lower galaxy.
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On the left is NGC 2724.
On the right is Arp 202 consisting of galaxies NGC 2719 (top) and PGC 25284 (NGC 2719A - below).
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Arp 204 is the pair of galaxies above the center of the image, consisting of PGC 46729 (right part) and PGC 46811 (left part).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 3448 is the left galaxy, PGC 32740 is the faint one to the right.
NGC 3432 is the large galaxy in the center of the image, PGC 32617 is the small one to the left.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
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The upper part of the galaxy is PGC 59113, the lower PGC 59114.
To the right of this is PGC 59110.
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It is two merging galaxies (NGC 6052-1/2). In the infrared, the object reaches a luminosity of 11^11 times that of the Sun.
(https://de.wikipedia.org/wiki/NGC_6052)
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PGC 42134 is the lower part of the galaxy pair, PGC 42135 the upper galaxy.
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KeithSteffens, CC BY-SA 4.0, via Wikimedia Commons
On the left is NGC 3718.
On the right is NGC 3729.
Above NGC 3718 the galaxy group Arp 322 / HCG 56 (galaxy group consisting of 5 galaxy) can be seen.
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On the right is the galaxy NGC 7679.
On the left is NGC 7682.
Together they form the galaxy pair Arp 216.
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The small galaxy to the right of Arp 218 is PGC 1564508.
Judy Schmidt from USA, CC BY 2.0, via Wikimedia Commons
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It is probably two merging galaxies. In the infrared, the object reaches a luminosity of 10^12 times the Sun.
(https://de.wikipedia.org/wiki/Arp_220)
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ESO/VST ATLAS team. Acknowledgement: Durham University/CASU/WFAU, CC BY 4.0, via Wikimedia Commons, Original-Link
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The small galaxy at the right edge is NGC 7576.
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The small galaxy directly above NGC 3921 is PGC 2491113.
The large galaxy at the top is NGC 3916.
The small galaxy just to the right of NGC 3921 is PGC 2489542.
The galaxy on the right edge is PGC 37013.
ESO, CC BY 4.0, via Wikimedia Commons, Original-Link
On the left is NGC 474.
To the right is NGC 470.
Together they form the galaxy pair Arp 227, with the center located in NGC 474.
To the lower right is the galaxy NGC 467.
The three galaxies form the galaxy trio KTG 5.
The center of the galaxy group is designated Abell 227.
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IC 162 lies in the center of the image.
Immediately to its left is PGC 6653 and at the top of the image is PGC 6654.
In the upper right corner is PGC 6634.
Right beside IC 162 is IC 161.
The SIMBAD and Skymap coordinates are not set up correctly for Arp 228. They point to the object IC 161 to the right of it. Vizier has the correct coordinates deposited.
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NGC 507 is the large galaxy in the center of the image, with NGC 508 directly above it.
Diagonally below it on the right is NGC 504, and at the bottom right edge of the image is NGC 494.
Judy Schmidt, CC BY 2.0, via Wikimedia Commons
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The galaxy in the lower left is PGC 2610.
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To the right of the center of the image is the large galaxy NGC 2911 (Arp 232).
Diagonally below it on the left is NGC 2914 (Arp 137).
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The galaxy diagonally below on the right is IC 1622.
The galaxy at the right edge of the image is PGC 3973.
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The Arp 237 galaxy pair consists of galaxies PGC 26842 (right) and PGC 26844 (left).
Together with galaxies PGC 26831 (oblique lower right) and PGC 26830 (oblique upper right), they form the galaxy group HCG 38.
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NGC 5278 is the galaxy on the right, NGC 5279 is the galaxy on the left.
To the right is PGC 48439.
Diagonally to the right below Arp 239 is PGC 48450.
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NGC 5257 is the right galaxy, NGC 5258 is the left galaxy.
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PGC 52283 is the lower galaxy, PGC 87675 is the upper galaxy.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 4.0, via Wikimedia Commons
The lower galaxy is NGC 4676A, the upper one NGC 4676B.
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The lower galaxy is NGC 4038 (C60), the upper is NGC 4039 (C61).
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The left galaxy is NGC 2993.
The galaxy on the upper right is NGC 2992, at the end of which is the dwarf galaxy Arp 245N, formed by tidal forces.
(http://herschel.esac.esa.int/TheUniverseExploredByHerschel/posters/B18_LisenfeldU_Arp245.pdf)
Still visible on the photo plates in the Arp catalog is the oblique spiral galaxy PGC 90942 (FGC 938 - FGC=Flat Galaxy Catalog) at lower right. According to Wikipedia it should belong to the group, but probably it does not interact with the other galaxies. (https://images.mantrapskies.com/catalog/ARP-GALAXIES/ARP245-NGC2992-NGC2993/index.htm)
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To the right of the image center is the galaxy pair Arp 246, consisting of the galaxies NGC 7837 (right) and NGC 7838 (left).
In the lower left corner is NGC 3, NGC 4 can be seen at the left edge of the image.
Between NGC 4 and Arp 246 is the last galaxy listed in the NGC catalog, NGC 7840.
NGC 7835 can be seen at the upper right edge of the image, and NGC 7834 at the right edge.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
IC 2338 is lower galaxy, IC 2339 is the upper galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 36723 is the right galaxy, PGC 36733 is the middle galaxy, and PGC 36742 is the upper galaxy.
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PGC 25 is the lowest galaxy.
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The galaxy on the right is PGC 21362, which has two bright nuclei, probably due to the collision of two galaxies.
The left galaxy is PGC 2063674.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The upper galaxy is PGC 3163.
Diagonally below it on the right is PGC 932236.
Obliquely to the left is USNO A2.0 0750-00213734 (no other designation has been defined here).
The galaxy at the upper right edge of the image is PGC 173089.
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PGC 27928 is the lower galaxy, PGC 27929 is the upper galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 27817 is the right galaxy, PGC 27828 is the left galaxy.
At the bottom of the screen is PGC 27825.
ESO: observations by Ferdinando Patat and the Paranal Science team (ESO), final processing by Olivia Blanchemain, Henri Boffin and Haennes Heyer (ESO)., CC BY 4.0, via Wikimedia Commons, Original-Link
NGC 5917 is the right galaxy, PGC 54817 is the left galaxy.
In the upper left corner, PGC 1018861 can be seen.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
In the center of the image is Arp 255, where PGC 28487 is the lower galaxy and PGC 200253 is the upper galaxy.
Diagonally to the right below is PGC 28478.
At the left edge of the image is PGC 28502.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 1221 is the upper galaxy, PGC 1224 is the lower galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 24889 is small galaxy at the top, PGC 24890 is the large galaxy below.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 10042 is the upper node, PGC 10043 is center node, PGC 10044 is elongated lower part from blue area and PGC 10046 is galaxy below.
Copyright by WikiSky.org, WikiSky's snapshot tool (nachbearbeitet mit Gimp)
Arp 259 consists of three galaxies.
The first two galaxies form NGC 1741 shown (left part of the large cluster). Here the upper part (bright blue area) is PGC 16573, the lower horizontal part is 2MASXI J0501387-041533.
The third galaxy is the right part and is called PGC 16570 (NGC 1741B).
Arp 259 belongs to HCG 31.
According to the original papers of Hickson PGC 16571 (small galaxy above PGC 16570) belongs to HCG 31.
In Wikipedia and SIMBAD HCG 31E (just below NGC 1741, the small blue dot), HCG 31F (small blue galaxy right below the star) and IC 399 (galaxy diagonally left below) are also included.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 39014 is the right galaxy, PGC 93116 is the left galaxy.
ESO, CC BY 4.0, via Wikimedia Commons, Original-Link
PGC 52935 is the right galaxy, PGC 52940 is the left galaxy.
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PGC 72977 is the upper part of the galaxy, PGC 72978 is the lower part.
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Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Jschulman555, CC BY-SA 3.0, via Wikimedia Commons
NGC 4485 and NGC 4490 together form the galaxy pair Arp 269.
NGC 3395 is the right galaxy, NGC 3396 the left galaxy.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY-SA 4.0, via Wikimedia Commons
The left galaxy is NGC 5426, the right one is NGC 5427.
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Left is Arp 272 (consisting of NGC 6050 (left) and IC 1179 (right)).
There is a discrepancy in the Arp catalog here. On the photo plate the galaxies NGC 6050 and IC 1179 are shown but in his table he puts NGC 6054 as a target.
The online catalogs SIMBAD and Vizier have taken the table value, Wikipedia the galaxy pair.
At the left edge NGC 6054 can be seen.
On the right is the galaxy NGC 6045, which together with PGC 84720 (NGC 6045B - on the left edge of the galaxy) forms Arp 71.
All three are part of the Hercules cluster Abell 2151.
The large galaxy at the top is UGC 1810, the smaller one below is UGC 1813.
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The three galaxies are named NGC 5679A, NGC 5679B, NGC 5679C from right to left.
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NGC 935 is the upper galaxy, IC 1801 is the lower galaxy.
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NGC 4809 is the upper galaxy, NGC 4810 the lower galaxy.
The pair of galaxies consists of NGC 7253A (top) and NGC 7253B (bottom).
Still visible in the lower right corner is PGC 69543.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 1253 is the right galaxy, NGC 1253A (PGC 12053) the left one.
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The pair of galaxies consists of NGC 3769 (on the right and NGC 3769A (the small galaxy on the left).
Above is the galaxy NGC 4631 (C32).
The small galaxy above is NGC 4627.
Together they form the galaxy pair Arp 281.
At lower left is the galaxy NGC 4656.
Judy Schmidt, CC BY 2.0, via Wikimedia Commons
NGC 169 is the large galaxy above, IC 1559 is the small galaxy below.
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NGC 2798 is the galaxy on the right, NGC 2799 is the galaxy on the left.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 7714 is the right galaxy, NGC 7715 the left galaxy.
At the top of the image, NGC 2857 (Arp 1) can be seen.
Near the center of the image is NGC 2856 and diagonally below it on the right is NGC 2854. Together they form the galaxy pair Arp 285.
At the very top is the galaxy NGC 5569.
In the center is NGC 5566.
To the right is NGC 5560.
Together, these three galaxies form the galaxy triplet Arp 286.
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The large galaxy on the right is NGC 2735, and the small one to the left is NGC 2735A.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The upper large galaxy is NGC 5221.
Below that the galaxy is NGC 5222, next to which on the left are the small galaxies PGC 93122 (upper blue area) and PGC 1438924 (lower blue area).
On the lower left side of the galaxy is NGC 5230.
The small galaxy towards the right edge of the image is PGC 1441117.
In the center at the upper edge of the image NGC 5226 is still visible.
ESO, CC BY 4.0, via Wikimedia Commons, Original-Link
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
IC 195 is the lower galaxy, IC 196 is the upper galaxy.
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Halton Arp describes this object as a pair of galaxies with wind effects.
A second galaxy is not seen here as interacting with PGC 31930.
Possibly he means the small galaxy USNO-A2.0 0975-06553264 above it, or a small galaxy SDSS J104248.72+132710.8 in the lower part of the spiral arm (small yellow dot).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Halton Arp describes this object as a pair of galaxies with wind effects.
A second galaxy is not seen here so interacts with IC 575.
At
http://ned.ipac.caltech.edu/cgi-bin/datasearch?search_type=Note_id&objid=55503&objname=IC%200575&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1&of=table
in item 2 there is a hint that it could be two merging galaxies.
The galaxy above is PGC 1028040.
The blue galaxy diagonally to the right below is PGC 28567.
Adam Block/Mount Lemmon SkyCenter/University of Arizona, CC BY 3.0, via Wikimedia Commons
NGC 6285 is the left galaxy, NGC 6286 is the right galaxy.
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NGC 3786 is the lower galaxy, NGC 3788 is the upper galaxy.
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PGC 72139 (MCG-01-60-021) is the lower galaxy, PGC 72155 (MCG-01-60-022) is the upper galaxy.
At the upper right edge is IC 1505, which Halton Arp refers to as a reference in his papers.
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The left pair of galaxies, consisting of PGC 35345 (top) and PGC 2580146 (bottom), is Arp 296
.
The group of galaxies on the right is Arp 199. The system consists of the merging pair of galaxies NGC 3690A (left panel) and NGC 3690B (lower right panel), and the small galaxy IC 694 (above right, the small white galaxy).
Jschulman555, CC BY-SA 3.0, via Wikimedia Commons
To the upper left is NGC 5752.
Directly to the right is NGC 5754.
Vertically below it is NGC 5755.
Diagonally below on the left the small galaxy is NGC 5753.
Together, this quartet forms Arp 297.
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NGC 7469 is the lower galaxy, IC 5283 the upper galaxy.
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The left pair of galaxies, consisting of PGC 35345 (top) and PGC 2580146 (bottom), is Arp 296.
The group of galaxies on the right is Arp 199. The system consists of the merging pair of galaxies NGC 3690A (left panel) and NGC 3690B (lower right panel), and the small galaxy IC 694 (above right, the small white galaxy).
PGC 26849 is the right galaxy, PGC 26864 is the left galaxy.
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PGC 33855 is the right galaxy, PGC 33862 is the left galaxy.
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PGC 53432 is the upper galaxy, PGC 53433 is the lower galaxy.
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IC 563 is the lower galaxy, IC 564 the upper galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 1241 is the right galaxy, NGC 1242 the left galaxy.
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NGC 4016 is the upper galaxy, NGC 4017 the lower galaxy.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 5744 is the right galaxy (consisting of UGC 1102 (PGC 93081) - lower slim region and UGC 1102B - upper region).
PGC 5759 is the left galaxy.
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NGC 2872 is the right galaxy, NGC 2874 is the left galaxy.
In Arp's papers, he writes among the remarks that the two galaxies may not interact.
The small galaxy above is NGC 2873.
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NGC 541 is a member of the galaxy cluster Abell 194.
The small blue galaxy to the left of NGC 541 is named Minkowski's Object.
Diagonally above it on the left is the pair of galaxies Arp 308 (NGC 545 above, NGC 547 below).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
NGC 942 is the lower galaxy, NGC 943 the right galaxy.
At the right edge of the image is IC 230.
PGC 973981 can be seen in the upper left.
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The pair of galaxies at the top is IC 1259 (Arp 310).
Obliquely below it on the right is IC 1258.
Diagonally below it on the left is IC 1260.
Together they form the galaxy group Arp 311.
PGC 2579433 is still visible at the left edge of the image.
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The pair of galaxies at the top is IC 1259 (Arp 310).
Obliquely below it on the right is IC 1258.
Diagonally below it on the left is IC 1260.
Together they form the galaxy group Arp 311.
PGC 2579433 is still visible at the left edge of the image.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The galaxy triplet Arp 312 (image center) consists of the galaxies PGC 59071 (left), PGC 59072 (top center) and PGC 59073 (bottom right).
Above them on the left is PGC 3097788 and above that is PGC 2286370.
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The galaxy in the upper right is NGC 3991.
The two galaxies below are NGC 3994 (right) and NGC 3995 (left).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
The galaxy triplet Arp 314 (center of image) consists of galaxies PGC 70127 (top), PGC 70130 (center), and PGC 70133 (bottom).
At the left edge of the image, PGC 1066529 can be seen.
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The galaxy triplet Arp 315 (center of image) consists of galaxies NGC 2830 (right), NGC 2831 (center), and NGC 2832 (left).
At the top center is NGC 3193.
In the center diagonally left below is NGC 3190.
To the right below is NGC 3187.
These three galaxies form the galaxy triplet Arp 316.
In the lower left is NGC 3185.
All four galaxies belong to the HCG 44 galaxy group.
Marekmazuch, CC BY-SA 4.0, via Wikimedia Commons
On the right is NGC 3628.
On the left is M66 and below that is M65.
The three galaxies are called the Leo triplet (Arp 317).
Hubble ESA, CC BY 2.0, via Wikimedia Commons, Original-Link
.jpg){kind=link}
On the right is NGC 833, with NGC 835, NGC 838, and NGC 839 following to the left.
Jschulman555, CC BY-SA 3.0, via Wikimedia Commons
Stephan's Quintet consists of the galaxies:
NGC 7317, NGC 7318A, NGC 7318B, NGC 7319 and NGC 7320C.
The galaxies are the yellow areas from right to left in this order.
The somewhat bluish galaxy NGC 7320 is closer to Earth and lies in the foreground of the quintet. It does not belong to the quintet. Since this was determined later, it was replaced in the quintet by NGC 7320C (far left) to make it five galaxies again.
DESI Legacy Imaging Surveys/LBNL/DOE & KPNO/CTIO/NOIRLab/NSF/AURA, CC BY 4.0, via Wikimedia Commons, Original-Link
Arp 320 consists of seven galaxies, consisting of the three large galaxies on the left (NGC 3746 (top), NGC 3745 (middle), NGC 3748 (bottom)), the three galaxies in the middle (NGC 3750 (top), NGC 3753 (middle), NGC 3754 (bottom)) and the galaxy NGC 3751 (right).
To the right of NGC 3748 is the galaxy PGC 36010, which together with Arp 320 then forms the galaxy group HCG 57.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
At the top is PGC 25716.
In the center is PGC 25709.
Below it on the left is PGC 25715, and below it on the right is PGC 25708.
The lowest galaxy is PGC 25713.
KeithSteffens, CC BY-SA 4.0, via Wikimedia Commons
On the left is NGC 3718.
On the right is NGC 3729.
Above NGC 3718 is the Arp 322 / HCG 56 galaxy group (galaxy group consisting of 5 galaxies).
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In the center of the image is Arp 323 consisting of NGC 7783A (right) and NGC 7783B (left).
Together with galaxy PGC 72806 (above) and PGC 72810 (diagonally left below), they form the galaxy group HCG 98.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Arp 324 includes five galaxies and a pair of galaxies (starting from lower left):
VV 159f (narrow galaxy at lower left).
VV 159c (bright galaxy to the right)
VV 159d (galaxy pair diagonally right below)
VV 159b (bright galaxy in the center)
VV 159e (small galaxy above right)
VV 159a (bright galaxy top right)
http://ned.ipac.caltech.edu/uri/NED::Image/jpg/1959VV....C...0000V/VV_159e:I:103a0:vv1958
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Arp 325 consists of five galaxies (from top to bottom):
2MASX J22062085-2103484
PGC 68034
PGC 68035
PGC 68036
2MASX J22062264-2104574
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Arp 326 consists of six galaxies (from top to bottom):
PGC 1302784 (at the top of the image).
PGC 48117 (diagonally left below)
PGC 48105 (image center)
SDSS J133710.58+062828.3 (to the right)
Arp 33 (UGC8613 / PGC 48118) (curved galaxy below)
PGC 214126 (lower edge of image)
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NGC 1875 is the elliptical galaxy in the center.
PGC 17173 is the small dot just diagonally to the left below.
PGC 17175 is the blue galaxy with PGC 17176 next to it on the left.
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In den originalen Schriften von 1989, sind nur fünf Galaxien aufgelistet (Tabelle 1, HCG 72, Spalte 6) und Grafik 72 auf Seite 387:
A: PGC 52844 (die große Galaxie ganz oben), B: PGC 52848 (die obere rechte Galaxie der Gruppe), C: PGC 52854 (die unterste große Galaxie in der Gruppe), D: PGC 52851 (die mittlere große Galaxie in der Gruppe) und E: PGC 52850 (die runde Galaxie in der Gruppe)
In den Schriften von 1992 in denen die Radialgeschwindigkeiten der Galaxien betrachtet werden, gibt es noch eine Galaxie F: PGC 52847 (die kleine Galaxie unter der runden Zentrumsgalaxie).
Direkt neben der unteren großen Galaxie C ist noch eine schwache blaue Galaxie VV 165G zu sehen, die zusammen mit den anderen sechs Galaxien Arp 328 bildet, obwohl in den Arp-Schriften nur von sechs Galaxien geschrieben ist.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Arp 329 consists of a chain of galaxies consisting of PGC 35574, PGC 35576, PGC 35575, PGC 35573, and PGC 35572 (from top to bottom).
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Arp 330 consists of 6 galaxies (from bottom to top):
PGC 59042 (lowest bright galaxy)
PGC 59056 (blue galaxy above)
PGC 59050 (bright galaxy in the center of the image)
PGC 59049 (galaxy directly above)
PGC 59054 (galaxy diagonally left above)
PGC 59048 (faint galaxy directly oblique left above)
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Halton Arp writes in his original 1966 papers that all galaxies from NGC 375 to NGC 388 belong to the galaxy group. That would be 10 galaxies in this area
In the listing of Arp galaxies by Webb (1996), Webb lists only 8 galaxies (https://vizier.u-strasbg.fr/viz-bin/VizieR-3?-source=VII/192/arplist&-out.max=1000&-out.form=HTML%20Table&-out.add=_r&-out.add=_RAJ,_DEJ&-sort=_r&-oc.form=sexa). NGC 375 and NGC 387 are not included.
NGC 379 (top), NGC 380 (below), pair of galaxies NGC 383 and NGC 382 (lower of the two), NGC 387 (small galaxy to the left of the pair of galaxies), NGC 386 (small galaxy below), NGC 385 (larger galaxy below), NGC 394 (lowest galaxy), NGC 388 (lower left outside of circle), NGC 375 (lower right below center on circle)
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Arp 332 consists of five galaxies:
NGC 1228 (large galaxy at the very top).
NGC 1229 (galaxy below)
NGC 1230 (slightly smaller galaxy directly in the center of the image)
IC 1892 (large galaxy at the bottom of the image)
PGC 11748 (small galaxy directly at the top of IC 1892)
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
In the center of the image is NGC 1024.
On the left edge are NGC 1028 (upper galaxy) and NGC 1029 (lower galaxy).
On the right edge, PGC 1385855 can be seen.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
Copyright by WikiSky.org, WikiSky's snapshot tool
Keesscherer, CC BY-SA 4.0, via Wikimedia Commons
_Galaxy_Group.jpg){kind=link}
In the center is M81.
On the right is M82.
The small galaxy in the upper left is NGC 3077.
Copyright by Legacy Surveys / D. Lang (Perimeter Institute), CC BY 4.0
PGC 154807 is the large galaxy in the center of the image, PGC 3094767 is the galaxy running across it.
The blue galaxy to the right of it is PGC 1010862.