NGC 2608

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 is 62,000 light-years across, and about 60% of the width of the Milky Way. 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. It was classified by Halton Arp (1927-) under "galaxies with split arms" in his 1966 Atlas of Peculiar Galaxies who noted that the "nucleus may be double or superposed star."[3] NGC 2608 is now considered to be a pair of interacting galaxies.[4]

NGC 2608
Hubble Space Telescope image of NGC 2608
Observation data (J2000 epoch)
ConstellationCancer
Right ascension 08h 35m 17.3s [1]
Declination+28° 28′ 24″ [1]
Redshift0.007122 (2135±8 km/s)[1]
Distance93.0 Mly (28.5 Mpc) [2]
Apparent magnitude (V)13.01 [1]
Characteristics
TypeSB(s)b [1]
Apparent size (V)2.3 × 1.4 arcmin [1]
Other designations
Arp 012, PGC 024111

Supernovae
  • SN 1920A was discovered by German astronomer Max Wolf (1863-1932). It peaked at magnitude 11.7 on 17 Dec 1920.[1] 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."[5]
  • SN 2001bg was discovered on 9 May 2001 (May 8.943 UT) by noted supernova hunter Tom Boles of Coddenham, Suffolk, England, with a 0.36-m Schmidt-Cassegrain telescope.[6] When first observed it was magnitude 14; it later peaked at around 13.7.[7] Its spectrum indicates that it is a typical Type Ia supernova.[1]

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 2608. Retrieved 7 Dec 2008.
  2. 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.
  3. Halton Arp (Nov 1966). "Atlas of Peculiar Galaxies". Astrophysical Journal Supplement. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
  4. "NGC 2608". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 Dec 2008.
  5. Schaefer, Bradley E.; Girard, Terrence M. (1999). "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.
  6. "International Astronomical Union Circular". Supernova 2001bg in NGC 2608. Central Bureau for Astronomical Telegrams. 9 May 2001. Retrieved 8 Dec 2008.
  7. "2001 Annual Report". Central Bureau of Astronomical Telegrams. 2002. Retrieved 2011-07-05.


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