Astronomy:NGC 634
| NGC 634 | |
|---|---|
 Picture created from images taken with the Wide Field Channel of Hubble's Advanced Camera for Surveys. | |
| Observation data (J2000 epoch) | |
| Constellation | Triangulum |
| Right ascension | 01h 38m 18.679s[1] |
| Declination | +35° 21′ 53.47″[1] |
| Redshift | 0.016417[2] |
| Helio radial velocity | 4,925 km/s[3] |
| Distance | 217.1 Mly (66.55 Mpc)[3] |
| Apparent magnitude (V) | 14.0 |
| Characteristics | |
| Type | Sa[4] |
| Apparent size (V) | 2′.04 × 0′.55[5] |
| Other designations | |
| MCG+06-04-048, UGC 1164,[6] PGC 6059 | |
NGC 634 is a spiral galaxy, lying at a distance of 217.1 megalight-years[3] away from the Milky Way in the northern constellation of Triangulum. This object was discovered in the nineteenth century by French astronomer Édouard Stephan.[7] It is inclined by an angle of 82.4° to the line of sight from the Earth, and thus is being viewed nearly edge on.[5]
Supernova SN 2006Q was reported 2.5″ east and 1.0″ north of the galactic core in NGC 634, January 24, 2006. This was most likely a type II supernova[5] and reached magnitude 18.74.[8] Another supernova explosion was reported near the galaxy on January 2, 2008. It was positioned 16.6 arcseconds west and 20.2 arcseconds north of the Galactic Center and was designated SN 2008A. This event reached a peak magnitude of 16.7 on January 3,[9] and was determined to be a type Iax supernova.[5]
References
- ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ Kochanek, C. S. et al. (October 2001), "The K-Band Galaxy Luminosity Function", The Astrophysical Journal 560 (2): 566–579, doi:10.1086/322488, Bibcode: 2001ApJ...560..566K
- ↑ 3.0 3.1 3.2 Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (February 2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal 655 (2): 790–813. doi:10.1086/510201. Bibcode: 2007ApJ...655..790C.
- ↑ "NED results for object NGC 0634". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+634&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ 5.0 5.1 5.2 5.3 Leaman, Jesse et al. (April 2011). "Nearby supernova rates from the Lick Observatory Supernova Search - I. The methods and data base". Monthly Notices of the Royal Astronomical Society 412 (3): 1419–1440. doi:10.1111/j.1365-2966.2011.18158.x. Bibcode: 2011MNRAS.412.1419L.
- ↑ "NGC 634". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+634.
- ↑ "A perfect spiral with an explosive secret". Hubble Space Telescope. May 30, 2011. https://www.spacetelescope.org/images/potw1122a/.
- ↑ Li, W. et al. (January 2006). Green, D. W. E.. ed. "Supernovae 2006Q, 2006R, 2006S". IAU Circular 8664: 2. Bibcode: 2006IAUC.8664....2L.
- ↑ Nakano, S. et al. (January 2008). Green, D. W. E.. ed. "Supernova 2008A in NGC 634". Central Bureau Electronic Telegrams 1193: 1. Bibcode: 2008CBET.1193....1N.
External links
- A Perfect Spiral with an Explosive Secret: ESA/Hubble Picture of the week.
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