NGC 1222

NGC 1222
Image of NGC 1222, taken by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension03h 08m 56.747s[1]
Declination−02° 57′ 18.76″[1]
Redshift0.008079[2]
Heliocentric radial velocity2422 km/s[2]
Distance109 Mly (33.3 Mpc)[3]
Apparent magnitude (V)12.5[4]
Apparent magnitude (B)13.5[4]
Characteristics
TypeS0− pec[2]
Size32,300 ly (9,890 pc)
Apparent size (V)1.1′ × 0.9′
Notable featuresStarburst galaxy
Other designations
Mrk 603, MCG-01-09-005, PGC 11774[5]

NGC 1222 is an early-type lenticular galaxy located in the constellation of Eridanus. The galaxy was discovered on 5 December 1883 by the French astronomer Édouard Stephan.[6] John Louis Emil Dreyer, the compiler of the New General Catalogue, described it as a "pretty faint, small, round nebula" and noted the presence of a "very faint star" superposed on the galaxy.[6]

NGC 1222's morphological type of S0− would suggest that it should have a mostly smooth profile and a very dull appearance. However, the galaxy was imaged by the Hubble Space Telescope in 2016, and the image showed that there were several bright blue star forming regions, as well as dark reddish areas of interstellar dust.[7] NGC 1222 is currently interacting with and swallowing two dwarf galaxies that are supplying the gas and dust needed to become a starburst galaxy.[7]

One supernova has been observed in NGC 1222: SN 2024any (type Ia, mag. 17.59).[8]

See also

References

  1. ^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  2. ^ a b c "NED results for object NGC 1222". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 21 February 2017.
  3. ^ Cappellari, Michele; et al. (2011). "The ATLAS3D project – I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria". Monthly Notices of the Royal Astronomical Society. 413 (2): 813–836. arXiv:1012.1551. Bibcode:2011MNRAS.413..813C. doi:10.1111/j.1365-2966.2010.18174.x. S2CID 15391206.
  4. ^ a b Frommert, Hartmut. "Revised NGC Data for NGC 1222". seds.org. Retrieved 21 February 2017.
  5. ^ "NGC 1222". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 February 2017.
  6. ^ a b Seligman, Courtney. "NGC Objects: NGC 1200–1249". cseligman.com. Retrieved 21 February 2017.
  7. ^ a b "A greedy giant | ESA/Hubble". www.spacetelescope.org. 2016. Retrieved 21 February 2017.
  8. ^ Transient Name Server entry for SN 2024any. Retrieved 21 January 2024.
  • Media related to NGC 1222 at Wikimedia Commons
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