Arp 142
| Galaxy Arp 142 |
|
|---|---|
 |
|
| Image of WFC3 from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Water snake |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 37 m 44.5 s |
| declination | + 02 ° 45 ′ 15 ″ |
| Appearance | |
| Morphological type | I? (NGC 2936) E (NGC 2937) |
| Brightness (visual) | 12.9 (NGC 2936) 13.6 (NGC 2937) mag |
| Brightness (B-band) | 13.9 (NGC 2936) 14.6 (NGC 2937) mag |
| Angular expansion | 1.3 / 0.5 (NGC 2936) 0.8 / 0.6 (NGC 2937) |
| Position angle | 35 ° (NGC 2936) 0 ° (NGC 2937) |
| Surface brightness | 12.5 (NGC 2936) 12.9 (NGC 2937) mag / arcmin² |
| Physical data | |
| Redshift | 0.023313 +/- 0.000127 0.022702 +/- 0.000110 |
| Radial velocity | 6989 +/- 38 6806 +/- 33 km / s |
|
Stroke distance v rad / H 0 |
(306 ± 22) · 10 6 ly (93.8 ± 6.6) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | March 3, 1864 |
| Catalog names | |
| NGC 2936/7 • UGC 5130/1 • PGC 27422/3 • CGCG 035-015 • MCG + 01-25-5 / 6 • Arp 142 • VV 316 • | |
Arp 142 ( VV 316 ) is a merging pair of galaxies in the constellation Hydra , which is about 300 million light years away from the Milky Way . It consists of a galaxy , NGC 2936 , and an elliptical galaxy , NGC 2937 . The former is very deformed and has extensive tidal arms that contain several star formation areas. In the visual and near infrared , the appearance of NGC 2936 is that of a bird's head with its core as the eye and the tidal arms as the neck. The appearance of the system shows certain similarities to Arp 125 . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of elliptical galaxies with emanating material .
swell
- Xu et al .: Local Benchmarks for the Evolution of Major-merger Galaxies — Spitzer Observations of a K-band Selected Sample. In: The Astrophysical Journal . (ApJ) Vol. 713, No. 1, 2010, p. 352, doi : 10.1088 / 0004-637X / 713/1/330 , full text online .
- CJ Lonsdale, SE Persson, K. Matthews: Infrared observations of interacting / merging galaxies. In: The Astrophysical Journal. (ApJ) Vol. 287, December 1, 1984, pp. 95-107, doi : 10.1086 / 162666 , full text online .
- 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
Individual evidence
- ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE NGC 2936
- ↑ a b c NASA / IPAC EXTRAGALACTIC DATABASE NGC 2937
- ↑ a b c d e f SEDS : NGC 2936
- ↑ a b c d e f SEDS : NGC 2937
- ↑ Seligman
- ↑ for example Sergio A. Cellone, Juan Carlos Forte: The Peculiar Morphology of the Irregular Galaxy NGC 1427A. In: The Astrophysical Journal. (ApJ) April 1997, Volume 113, No. 4, P. 1248, doi : 10.1086 / 118339 , full text online .