Arp 57
| Galaxy Arp 57 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Berenike's hair |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 16 m 47.3 s |
| declination | + 14 ° 25 ′ 40 ″ |
| Appearance | |
| Morphological type | Sc |
| Brightness (visual) | 15.5 mag |
| Angular expansion | 0.9 ′ × 0.6 ′ |
| Physical data | |
| Redshift | 0.060208 ± 0.000150 |
| Radial velocity | (18050 ± 45) km / s |
|
Stroke distance v rad / H 0 |
(806 ± 56) · 10 6 Lj (247.0 ± 17.3) Mpc |
| history | |
| Catalog names | |
| PGC 46225 • CGCG 101-019 • MCG + 03-34-013 • 2MASX J13164737 + 1425399 • Arp 57 • VV 289a • | |
Arp 57 is a spiral galaxy in the constellation Haar der Berenike , which is about 806 million light-years away from the Milky Way, which at the end of one of its spiral arms interacts with a smaller object of high surface brightness ( VV 289b ) ( Arp 57 ). The galaxy also appears to be interacting with a smaller companion galaxy (MCG + 03-34-13).
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a small companion of high surface brightness on one arm .
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