NGC 2748

In this article, NGC 2748 will be addressed from a global and open perspective, with the purpose of providing a comprehensive vision on this topic. Its importance, implications and possible challenges currently facing will be analyzed. Likewise, different approaches and points of view will be examined, in order to offer a panoramic view that allows readers to deeply understand the relevance of NGC 2748 in different contexts. Through an exhaustive analysis, we will seek to contribute to the debate and reflection on this topic, with the intention of providing new perspectives and enriching knowledge around NGC 2748.

NGC 2748
NGC 2748 imaged by the Hubble Space Telescope
Observation data (J2000.0 epoch)
ConstellationCamelopardalis
Right ascension09h 13m 43.037s[1]
Declination+76° 28′ 31.23″[1]
Redshift0.004930[2]
Heliocentric radial velocity1,473 km/s[3]
Distance61.3 Mly (18.79 Mpc)[3]
Apparent magnitude (V)11.7[4]
Characteristics
TypeSAbc[5]
Apparent size (V)2.250 × 0.720 arcmin[2]
Other designations
UGC 4825, MCG +13-07-019, PGC 26018[2]

NGC 2748 is a spiral galaxy in the northern circumpolar constellation of Camelopardalis,[6] located at a distance of 61.3 megalight-years from the Milky Way.[3] It was discovered September 2, 1828 by John Herschel.[6] The morphological classification of SAbc[5] indicates this is an unbarred spiral with moderate to loosely-wound spiral arms. It is a disk-like peculiar galaxy with a stellar shell that is rotating about the main galactic axis. This shell was most likely formed through the capture and disruption of a dwarf companion.[7] The galactic nucleus likely contains a supermassive black hole with a mass of 4.4+3.5
−3.6×107 M☉, or 44 million times the mass of the Sun.[5]

Supernovae and Luminous Red Nova

Three supernovae and one luminous red nova have been observed in NGC 2748.

  • A magnitude 14.5 supernova, designated SN 1985A, was discovered in this galaxy by Paul Wild on January 25, 1985. It was located 3″ west and 10″ south of the galaxy's nucleus,[8] and was later classified as a type Ia supernova.[9]
  • On August 31, 2013, a supernova was discovered by Raffaele Belligoli and Flavio Castellani at a position 19″ west and 21″ north of the core of NGC 2748.[10] It was designated SN 2013ff and reached magnitude 15.2. Subsequent studies found a best match to a type Ic supernova.[11]
  • Kōichi Itagaki announced the discovery of PSN J09132750+7627410 (also known as AT 2015xf) on 10 February 2015. The transient was originally classified as a luminous blue variable, a type of supernova impostor.[12][13] Later analysis concluded that it was actually a luminous red nova (LRN).[14]
  • Supernova SN 2017gkk (type IIb, mag. 14.7) was discovered by Kōichi Itagaki on 31 August 2017.[15][16]

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 "NGC 2748". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-04-16.
  3. ^ a b c Tully, R. Brent; et al. (August 2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
  4. ^ Frommert, Hartmut. "NGC 2748". SEDS. Retrieved 2020-04-16.
  5. ^ a b c Atkinson, J. W.; et al. (May 2005). "Supermassive black hole mass measurements for NGC 1300 and 2748 based on Hubble Space Telescope emission-line gas kinematics". Monthly Notices of the Royal Astronomical Society. 359 (2): 504–520. arXiv:astro-ph/0502573. Bibcode:2005MNRAS.359..504A. doi:10.1111/j.1365-2966.2005.08904.x. S2CID 16193663.
  6. ^ a b Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 2700 - 2749". cseligman.com. Retrieved 2020-04-15.
  7. ^ Merkulova, O. A.; et al. (September 2009). "2-D spectroscopy of polar-ring galaxies candidates. II. The peculiar galaxies NGC 2748 and UGC 4385". Astronomy Letters. 35 (9): 587–598. Bibcode:2009AstL...35..587M. doi:10.1134/S1063773709090023. S2CID 121033172.
  8. ^ Wild, P.; Schildknecht, T. (January 1985). Marsden, B. G. (ed.). "Supernova 1985A in NGC 2748". IAU Circular. 4031: 3. Bibcode:1985IAUC.4031....3W.
  9. ^ Wegner, Gary; McMahan, Robert K. (February 1987). "Spectroscopy of the Supernova 1982V, 1984A, and 1985B". Astronomical Journal. 93: 287. Bibcode:1987AJ.....93..287W. doi:10.1086/114312.
  10. ^ Green, D. W. E. (2013). "Supernova 2013ff in NGC 2748 = PSN J09133888+7628108". Central Bureau Electronic Telegrams (3656): 1. Bibcode:2013CBET.3656....1G.
  11. ^ Brimacombe, J.; et al. (September 2013). Green, D. W. E. (ed.). "Supernova 2013ff in NGC 2748 = Psn J09133888+7628108". Central Bureau Electronic Telegrams. 3647: 1. Bibcode:2013CBET.3647....1B.
  12. ^ Tartaglia, L.; et al. (June 2016). "The Supernova Impostor PSN J09132750+7627410 and Its Progenitor". The Astrophysical Journal Letters. 823 (2): 7. arXiv:1604.04628. Bibcode:2016ApJ...823L..23T. doi:10.3847/2041-8205/823/2/L23. S2CID 118392026. L23.
  13. ^ Fox, Derek (12 February 2015). "Asiago spectroscopic observation of PSN J09132750+7627410". The Astronomer's Telegram. Retrieved 31 August 2024.
  14. ^ "AT 2015xf". Transient Name Server. IAU. Retrieved 20 April 2025.
  15. ^ "SN 2017gkk". Transient Name Server. IAU. Retrieved 17 August 2024.
  16. ^ Onori, F.; et al. (September 2017). "Spectroscopic observation of SN2017gkk by NUTS (NOT Un-biased Transient Survey)". The Astronomer's Telegram. 10698: 1. Bibcode:2017ATel10698....1O.