Arp 65
| Galaxy Arp 65 |
|
|---|---|
 |
|
| Combined SST images at 3.6 µm (blue) and 8.0 µm (red); right NGC 90, left NGC 93 | |
| AladinLite | |
| Constellation | Andromeda |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 16 h 05 m 23 s |
| declination | + 17 ° 45.4 ′ |
| Appearance | |
| Morphological type | SAB (s) c pec (NGC 90) S? (NGC 93) |
| Brightness (visual) | 13.8 (NGC 90) 13.6 (NGC 93) mag |
| Brightness (B-band) | 14.5 (NGC 90) 14.4 (NGC 93) mag |
| Angular expansion | 1.9 × 0.8 (NGC 90) 1.4 × 0.6 (NGC 93) |
| Position angle | 132 ° (NGC 90) 48 ° (NGC 93) |
| Surface brightness | 14.1 (NGC 90) 13.3 (NGC 93) mag / arcmin² |
| Physical data | |
| Redshift | 0.017856 ± 0.000023 0.017946 ± 0.000033 |
| Radial velocity | (5353 ± 7) (5380 ± 10) km / s |
|
Stroke distance v rad / H 0 |
(246 ± 17) · 10 6 ly (75.5 ± 5.3) Mpc |
| history | |
| discovery | RJ Mitchell |
| Discovery date | October 26, 1854 |
| Catalog names | |
| NGC 90/93 • UGC 208/9 • PGC 1405/12 • CGCG 479-013 / 15 • MCG + 04-02-011 / 12 • Arp 65 • VV 220 • | |
Arp 65 is an interacting galaxy pair of two spiral galaxies with roughly equal masses. The two galaxies are also known as NGC 90 and NGC 93 and are in the constellation Andromeda , with NGC 93 lying east of NGC 90 when viewed from Earth. Arp 65 is about 250 million light years away. 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 .
The galaxies were discovered independently by the Irish astronomer R. J. Mitchell (October 26, 1854), Heinrich Louis d'Arrest (October 5, 1864) and by Herman Schultz (October 17, 1866).
Web links
Commons : Arp 65 - collection of images, videos and audio files
- Spitzer Space Telescope ( Memento from January 31, 2009 in the Internet Archive )
- Arp 65 at Simbad
- ARP ATLAS OF PECULIAR GALAXIES
- Seligman Arp
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