NGC 634

NGC 634 is a spiral galaxy, lying at a distance of 217.1 megalight-years[3] away from the Milky Way in the northern constellation of Triangulum. This object was discovered back in the nineteenth century by French astronomer Édouard Stephan.[7] It is inclined by an angle of 82.4° to the line of sight from the Earth, and thus is being viewed nearly edge on.[5]

NGC 634
Picture created from images taken with the Wide Field Channel of Hubble's Advanced Camera for Surveys.
Credit: ESA/Hubble & NASA
Observation data (J2000 epoch)
ConstellationTriangulum
Right ascension01h 38m 18.679s[1]
Declination+35° 21′ 53.47″[1]
Redshift0.016417[2]
Helio radial velocity4,925 km/s[3]
Distance217.1 Mly (66.55 Mpc)[3]
Apparent magnitude (V)14.0
Characteristics
TypeSa[4]
Apparent size (V)2′.04 × 0′.55[5]
Other designations
MCG+06-04-048, UGC 1164,[6] PGC 6059

Supernova SN 2006Q was reported 2.5″ east and 1.0″ north of the galactic core in NGC 634, January 24, 2006. This was most likely a type II supernova[5] and reached magnitude 18.74.[8] Another supernova explosion was reported near the galaxy on January 2, 2008. It was positioned 16.6 arcseconds west and 20.2 arcseconds north of the galactic center and was designated SN 2008A. This event reached a peak magnitude of 16.7 on January 3,[9] and was determined to be a type Iax supernova.[5]

References
  1. Skrutskie, M. F.; et al. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
  2. Kochanek, C. S.; et al. (October 2001), "The K-Band Galaxy Luminosity Function", The Astrophysical Journal, 560 (2): 566–579, arXiv:astro-ph/0011456, Bibcode:2001ApJ...560..566K, doi:10.1086/322488, S2CID 119420446
  3. Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (February 2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201. S2CID 11672751.
  4. "NED results for object NGC 0634". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 3 February 2017.
  5. Leaman, Jesse; et al. (April 2011). "Nearby supernova rates from the Lick Observatory Supernova Search - I. The methods and data base". Monthly Notices of the Royal Astronomical Society. 412 (3): 1419–1440. arXiv:1006.4611. Bibcode:2011MNRAS.412.1419L. doi:10.1111/j.1365-2966.2011.18158.x. S2CID 118430231.
  6. "NGC 634". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-04-02.
  7. "A perfect spiral with an explosive secret". Hubble Space Telescope. May 30, 2011. Retrieved 2020-04-03.
  8. Li, W.; et al. (January 2006). Green, D. W. E. (ed.). "Supernovae 2006Q, 2006R, 2006S". IAU Circular. 8664: 2. Bibcode:2006IAUC.8664....2L.
  9. Nakano, S.; et al. (January 2008). Green, D. W. E. (ed.). "Supernova 2008A in NGC 634". Central Bureau Electronic Telegrams. 1193: 1. Bibcode:2008CBET.1193....1N.


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