Arp |
SPIRAL GALAXIES: |
Examples |
1-6 |
Low surface brightness |
NGC 2537 |
7-12 |
Split arm |
NGC 2523 |
13-18 |
Detached segments |
NGC 4088, NGC 7314 |
19-21 |
Three-armed |
NGC 145 |
22-24 |
One-armed |
NGC 4027, NGC 4618 |
25-30 |
One heavy arm |
M101, NGC 6946 |
31-36 |
Integral sign |
NGC 4615 |
|
SPIRALS WITH COMPANIONS ON ARMS: |
|
37-48 |
Low surface brightness companions |
M77, NGC 1232 |
49-78 |
Small, high surface brightness companions |
M90, NGC 1097 |
79-91 |
Large, high surface brightness companions |
M51, NGC 5395 |
92-101 |
Elliptical companions |
NGC 3227, Hickson 93 |
|
ELLIPTICAL GALAXIES: |
|
102-108 |
Connected to spirals |
NGC 5218 |
109-112 |
Repelling spiral arms |
NGC 7805 |
113-132 |
Close to & perturbing spirals |
M60, NGC 2300 |
133-136 |
With nearby fragments |
M49, NGC 1023 |
137-145 |
Material emanating from E galaxies |
NGC 275, NGC 2444 |
|
GALAXIES: |
|
146-148 |
With associated rings |
IC 298 |
149-152 |
With jets |
M87 |
153-160 |
Disturbed with Interior Absorption |
NGC 5128, NGC 520 |
161-166 |
With diffuse filaments |
NGC 3414, NGC 750 |
167-172 |
Diffuse counter-tails |
NGC 2672, NGC 5718 |
173-178 |
Narrow counter-tails |
NGC 5613, NGC 4933 |
179-193 |
Narrow filaments |
NGC 4651, NGC 6217 |
194-208 |
Material ejected from nucleus |
NGC 3432, NGC 5544 |
209-214 |
Irregularities, absorption & resolution |
NGC 1569, NGC 7625 |
215-220 |
Adjacent loops |
NGC 2782, NGC 3310 |
221-226 |
Amorphous spiral arms |
NGC 2655, NGC 7727 |
227-231 |
Concentric rings |
NGC 474, NGC 508 |
232-256 |
Appearance of Fission |
NGC 4038, NGC 4676 |
257-268 |
Irregular clumps |
NGC 3239, NGC 4861 |
|
DOUBLE GALAXIES: |
|
269-274 |
Connected arms |
NGC 4490, NGC 3395 |
275-280 |
Interacting |
NGC 3769, NGC 1253 |
281-286 |
Infall & attraction |
NGC 4631, NGC 5566 |
287-292 |
Wind effects |
NGC 3981, IC 195 |
294-297 |
Long filaments |
NGC 3786, NGC 3690 |
311-321 |
Groups of galaxies |
M66, Hickson 44 |
322-332 |
Chains of galaxies |
Hickson 55, Hickson 56 |