Astronomy:NGC 908
| NGC 908 | |
|---|---|
 NGC 908 imaged by the Very Large Telescope of ESO. | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 23m 04.6s[1] |
| Declination | −21° 14′ 02″[1] |
| Redshift | 1509 ± 5 km/s[1] |
| Distance | 56.0 ± 5.7 Mly (17.2 ± 1.8 Mpc)[1] |
| Group or cluster | NGC 908 group |
| Apparent magnitude (V) | 10.83[2] |
| Characteristics | |
| Type | SA(s)c [1] |
| Apparent size (V) | 6′.0 × 2′.6[1] |
| Other designations | |
| MCG-04-06-035, PGC 9057[2] | |
NGC 908 is an unbarred spiral galaxy in the constellation Cetus. It was discovered on 20 September 1786 by William Herschel.[3] This galaxy is 56 million light years away from Earth. It is the main galaxy in the NGC 908 group, which also includes NGC 899, NGC 907, and IC 223.[4]
Appearance
NGC 908 has vigorous star formation and is a starburst galaxy. The galaxy has a three-arm spiral pattern; two of its arms have peculiar morphology. The galaxy has a bright central bulge. Clusters of young stars and star-forming knots can be seen in the arms. Starburst activity and the peculiar morphology of the galaxy indicate it had a close encounter with another galaxy, although none are visible now.[5]
Stars observed
Two supernovae have been observed in NGC 908:
- SN 1994ai (Type Ic, mag. 17) was discovered by Robert McNaught on 20 December 1994.[6][7]
- SN 2006ce (Type Ia, mag. 12.4) was discovered by Libert "Berto" Monard on 10 May 2006.[8][9]
Also, one luminous blue variable has been observed in this galaxy: AT 2021ablz (type LBV, mag. 20.6) was discovered by Pan-STARRS on 14 October 2021.[10]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Results for NGC 908". http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+908.
- ↑ 2.0 2.1 "Your NED Search Results". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+908&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&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.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 908". https://cseligman.com/text/atlas/ngc9.htm#908.
- ↑ Dmitry Makarov and 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.
- ↑ "The Starburst Galaxy NGC 908". 26 July 2006. https://www.eso.org/public/images/eso0627a/.
- ↑ Williams, A.; Martin, R.; Benetti, S. (1994). "Supernova 1994ai in NGC 908". International Astronomical Union Circular (6120): 1. Bibcode: 1994IAUC.6120....1W. http://www.cbat.eps.harvard.edu/iauc/06100/06120.html#Item1.
- ↑ "SN 1994ai". IAU. https://www.wis-tns.org/object/1994ai.
- ↑ Ponticello, N. J.; Khandrika, H.; Madison, D. R.; Li, W.; Newton, J.; Crowley, T.; Puckett, T.; Monard, L. A. G. et al. (2006). "Supernovae 2006cb, 2006cc, 2006cd, 2006ce". International Astronomical Union Circular (8709): 1. Bibcode: 2006IAUC.8709....1P. http://www.cbat.eps.harvard.edu/iauc/08700/08709.html#Item1.
- ↑ "SN 2006ce". IAU. https://www.wis-tns.org/object/2006ce.
- ↑ "SN 2021ablz". IAU. https://www.wis-tns.org/object/2021ablz.
External links
- NGC 908 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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