Arp 329
| Galaxy Arp 329 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 32 m 07.4 s |
| declination | + 70 ° 48 ′ 43 ″ |
| Appearance | |
| Brightness (visual) | 15.2 mag |
| Angular expansion | 1.1 |
| Physical data | |
| Redshift | 0.052600 |
| Radial velocity | 15,769 km / s |
|
Stroke distance v rad / H 0 |
(710 ± 50) x 10 6 ly (217.7 ± 15.2) Mpc |
| history | |
| Catalog names | |
| UGC 6514 • PGC PGC 35572-76 • CGCG 334-035 • MCG + 12-11-028 • Arp 329 • HCG 55 • VV 172 • VII Zw 407 | |
Arp 329 = HCG 55 is an interacting group of galaxies in the constellation Dragon, an estimated 700 million light years away from the Milky Way . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This group of galaxies belongs to the class chains of galaxies .
| designation |
α J2000.0 |
δ J2000.0 |
Morphological type | m V | Angular expansion | Distance ( million years ) |
|---|---|---|---|---|---|---|
| HCG 55A | 11 h 32 m 06.9 s | + 70 ° 48 ′ 56 ″ | SA0 pec: | 16 | 0 ′, 44 × 0 ′, 43 | 723 |
| HCG 55B | 11 h 32 m 05.6 s | + 70 ° 48 ′ 24 ″ | E pec: | 16.9 | 0 ′, 26 × 0 ′, 23 | 706 |
| HCG 55C | 11 h 32 m 05.7 s | + 70 ° 48 ′ 39 ″ | SBa pec: | 17.4 | 0 ′, 57 × 0 ′, 38 | 697 |
| HCG 55D | 11 h 32 m 06.8 s | + 70 ° 49 ′ 16 ″ | S0 | 17.6 | 0 ′, 27 × 0 ′, 22 | 723 |
| HCG 55E | 11 h 32 m 07.4 s | + 70 ° 49 ′ 07 ″ | S; N galaxy | 18.0 | 0 ′, 22 × 0 ′, 17 | 1652 |
Web links
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide , Richmond 2006, ISBN 978-0-943396-76-7