Arp 273
| Galaxy Arp 273 |
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|---|---|
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| Image taken with the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Andromeda |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 21 m 30.6 s |
| declination | + 39 ° 21 ′ 58 ″ |
| Appearance | |
| Morphological type | SA (s) b pec SB (s) a pec |
| Brightness (visual) | 13.4 mag 15.1 mag |
| Angular expansion | 2 x 1.3 1.5 x 0.4 |
| Physical data | |
| Affiliation | Abell 347 |
| Redshift | 0.025227 ± 0.000037 |
| Radial velocity | (7563 ± 11) km / s |
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Stroke distance v rad / H 0 |
(343 ± 24) x 10 6 ly (105.3 ± 7.4) Mpc |
| history | |
| Catalog names | |
| UGC 1810/1813 • PGC 8961/8970 • CGCG 523-028 / 029 • MCG + 6-6-23 / 24 • 2MASX J02212870 + 3922326, J02213261 + 3921246 • Arp 273 • VV 323 • KPG 64 | |
Arp 273 is an interacting pair of galaxies in the constellation Andromeda , which is an estimated 340 million light years away.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This pair of galaxies belongs to the class double galaxies with linked arms . The larger of the two spiral galaxies, UGC 1810 , has about five times more mass than the smaller one. The smaller galaxy, UGC 1813 , shows clear signs of active star formation in its core and has likely recently crossed the larger one.
Web links
- astronews.com: Galactic Rose for 21st Birthday April 21, 2011
- Spektrum.de : Amateur recordings [1]
- 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 e f NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ Interacting galaxies Arp 273 . National Optical Astronomy Observatory. Retrieved April 21, 2011.
- ↑ Oli Usher, Ray Villard: A galactic rose highlights Hubble's 21st anniversary . April 20, 2011. Retrieved April 21, 2011.
- ↑ FlugRevue July 2011, p. 74, A rose for Hubble's anniversary