Astronomy:NGC 908
| NGC 908 | |
|---|---|
 NGC 908 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 in 1786 by William Herschel. 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.[3]
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.[4]
Two supernovae have been observed in NGC 908: SN 1994ai (type Ic, mag. 17)[5] and SN 2006ce (type Ia, mag. 12.4).[6][7]
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.
- ↑ 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. http://www.sao.ru/hq/dim/groups/galaxies.dat. Retrieved 1 January 2016.
- ↑ "The Starburst Galaxy NGC 908". 26 July 2006. https://www.eso.org/public/images/eso0627a/.
- ↑ Transient Name Server entry for SN 1994ai. Retrieved 30 March 2023.
- ↑ "List of Supernovae". http://www.cbat.eps.harvard.edu/lists/Supernovae.html.
- ↑ Transient Name Server entry for SN 2006ce. Retrieved 30 March 2023.
External links
- NGC 908 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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