NGC 2608 (also known as Arp 12) is a barred spiral galaxy located 93 million light-years away in the constellation Cancer (the Crab). It was discovered by German-British astronomer William Herschel on 12 March 1785.[3] It spans 62,000 light-years, approximately 60% of the Milky Way's diameter. It is considered a grand design spiral galaxy and is classified as SB(s)b, meaning that the galaxy's arms wind moderately (neither tightly nor loosely) around the prominent central bar.
| NGC 2608 | |
|---|---|
 NGC 2608 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Cancer |
| Right ascension | 08h 35m 17.3294s [1] |
| Declination | +28° 28′ 24.294″ [1] |
| Redshift | 0.007192±0.000009[1] |
| Heliocentric radial velocity | 2,156±3 km/s[1] |
| Distance | 93.0 Mly (28.5 Mpc) [2] |
| Apparent magnitude (V) | 13.01 [1] |
| Characteristics | |
| Type | SB(s)b [1] |
| Size | ~59,300 ly (18.18 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.4′[1] |
| Other designations | |
| IRAS 08322+2838, Arp 12, UGC 4484, MCG +05-20-027, PGC 24111, CGCG 149-055[1] | |
It was classified under "galaxies with split arms" in the 1966 Atlas of Peculiar Galaxies by Halton Arp, who noted that the "nucleus may be double or superimposed star".[4] NGC 2608 is now thought to be a pair of interacting galaxies.[5]
- SN 1920A was discovered on 8 February 1920, with an apparent magnitude of 12.9, by German astronomer Max Wolf (1863–1932).[6] It reached peak brightness on 15 February 1920 at magnitude 12.05.[7] Its visual magnitude implies an overluminous bolometric magnitude; SN 1920A has since been classified as anomalous and is believed to be the result of "a completely different explosion mechanism."[8]
- SN 2001bg was discovered on 9 May 2001 (May 8.943 UT) by noted supernova hunter Tom Boles[9] of Coddenham, Suffolk, England, with a 0.36 m Schmidt-Cassegrain telescope.[10] When first observed, it had an apparent magnitude of 14; it later peaked at around 13.7.[11] Its spectrum indicates that it is a typical Type Ia supernova.[12]
See also
editReferences
edit- 1 2 3 4 5 6 7 8 9 "Results for NGC 2608". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 7 Dec 2008.
- ↑ Seigar, Marc S. (Jul 2005). "The connection between shear and star formation in spiral galaxies". Monthly Notices of the Royal Astronomical Society: Letters. 361 (1): L20–L24. arXiv:astro-ph/0504529. Bibcode:2005MNRAS.361L..20S. doi:10.1111/j.1745-3933.2005.00056.x. S2CID 14616885.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2608". Celestial Atlas. Retrieved 5 June 2025.
- ↑ Halton Arp (November 1966). "Atlas of Peculiar Galaxies". Astrophysical Journal Supplement. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
- ↑ "NGC 2608". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 December 2008.
- ↑ Wolf, Max (1920). "Nova oder Variabilis 3.1920 Cancre". Astronomische Nachrichten. 210: 373. Bibcode:1920AN....210..373W. doi:10.1002/asna.19202102106.
- ↑ Baade, Walter (1938). "The Absolute Photographic Magnitude of Supernovae". Astrophysical Journal. 88: 285. Bibcode:1938ApJ....88..285B. doi:10.1086/143983.
- ↑ Schaefer, Bradley E.; Girard, Terrence M.; arjun (2000). "Weird Supernovae: Superluminous, Superfast and Superfaint Examples". Anni Mirabiles, A Symposium Celebrating the 90th Birthday of Dorrit Hoffleit Held 7–8 March 1997 at Yale University, New Haven, CT.: 69–70. Bibcode:1999anmi.conf...69S.
- ↑ Tom Boles
- ↑ Hurst, G. M.; Boles, T.; Kerner, H. (2001). "Supernova 2001bg in NGC 2608". International Astronomical Union Circular (7621): 1. Bibcode:2001IAUC.7621....1H.
- ↑ "2001 Annual Report". Central Bureau of Astronomical Telegrams. 2002. Retrieved 5 July 2011.
- ↑ Gal-Yam, A.; Shemmer, O.; Dann, J. (2001). "Supernova 2001bg in NGC 2608". International Astronomical Union Circular. 7622: 2. Bibcode:2001IAUC.7622....2G.
External links
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Wikimedia Commons has media related to NGC 2608.
- NGC 2608 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images