Astronomy:NGC 2655
| NGC 2655 | |
|---|---|
| File:NGC2655 - HST - Potw1817a.tif NGC 2655 by Hubble Space Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Camelopardalis |
| Right ascension | 08h 55m 37.7s[1] |
| Declination | +78° 13′ 03″[1] |
| Redshift | 1400 ± 1 km/s[1] |
| Distance | 63 Mly (19.5 Mpc)[1] |
| Apparent magnitude (V) | 10.1 |
| Characteristics | |
| Type | SAB(s)0/a [1] |
| Apparent size (V) | 4.9′ × 4.1′[1] |
| Other designations | |
| Arp 225, UGC 4637, PGC 25069[1] | |
NGC 2655 is a lenticular galaxy in the constellation Camelopardalis. It is at a distance of 60 million light years from Earth. NGC 2655 is a Seyfert galaxy. The galaxy has asymmetric dust lanes in the centre of the galaxy, tidal arms and extended neutral hydrogen gas and may have recently experienced a merger. The complex dynamics of the HI and optical tails suggest the galaxy may have undergone more mergers in the past. A weak bar has been detected in infrared H band. The diameter of the disk of the galaxy is estimated to be 60 Kpc (195,000 ly).[2]
William Herschel discovered NGC 2655 in September 26, 1802 and described it as very bright and considerably large. The galaxy can be glimpsed with a 4-inch telescope under dark skies nearly 10° from the north celestial pole.[3]
NGC 2655 is the brightest member of the NGC 2655 group, which also contains the Sc galaxy NGC 2715, NGC 2591, and NGC 2748.[4][5] One of the gas structures of NGC 2655 is trailing off toward the small galaxy UGC 4714.[2]
Supernova
One supernova has been observed in NGC 2655.
- SN 2011B (Type Ia, mag. 15.8) was discovered by Kōichi Itagaki and Masaki Tsuboi on 7 January 2011.[6][7][8][9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "NASA/IPAC Extragalactic Database". Results for NGC 2655. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+2655.
- ↑ 2.0 2.1 Sparke, Linda S.; van Moorsel, Gustaaf; Erwin, Peter; Wehner, Elizabeth M. H. (January 2008). "NGC 2655: from Inner Polar Ring to Outer Shells and Tails". Astronomical Journal 135 (1): 99–111. doi:10.1088/0004-6256/135/1/99. Bibcode: 2008AJ....135...99S.
- ↑ Stephen James O'Meara (2007). Deep-Sky Companions: Hidden Treasures. Cambridge University Press. p. 240. ISBN 9781139463737.
- ↑ "A List of Nearby Galaxy Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galaclus.html.
- ↑ Dmitry Makarov; Igor Karachentsev (2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". MNRAS 412 (4): 2498–2520. doi:10.1111/j.1365-2966.2010.18071.x. Bibcode: 2011MNRAS.412.2498M.
- ↑ "SN 2011B". IAU. https://www.wis-tns.org/object/2011B.
- ↑ Yamaoka, H.; Koishikawa, M. (2011). "Supernova 2011B in NGC 2655". Central Bureau Electronic Telegrams (2625): 1. Bibcode: 2011CBET.2625....1Y. http://www.cbat.eps.harvard.edu/iau/cbet/002600/CBET002625.txt.
- ↑ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
- ↑ Bishop, David. "Bright Supernovae - 2011 - Entry for SN 2011B". https://www.rochesterastronomy.org/sn2011/index.html#2011B.
External links
- NGC 2655 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
 |  |
