Astronomy:NGC 2748

From HandWiki
NGC 2748
NGC 2748 imaged by the Hubble Space Telescope
Observation data (J2000.0 epoch)
ConstellationCamelopardalis
Right ascension 09h 13m 43.037s[1]
Declination+76° 28′ 31.23″[1]
Redshift0.004930[2]
Helio radial velocity1,473 km/s[3]
Distance61.3 Mly (18.79 Mpc)[3]
Apparent magnitude (V)11.7[4]
Characteristics
TypeSAbc[5]
Size~67,200 ly (20.61 kpc) (estimated)[6]
Apparent size (V)2.250′ × 0.720′[2]
Other designations
IRAS 09080+7640, UGC 4825, MCG+13-07-019, PGC 26018[2]

NGC 2748 is a spiral galaxy in the northern circumpolar constellation of Camelopardalis,[7] located at a distance of 61.3 megalight-years from the Milky Way.[3] It was discovered September 2, 1828 by British astronomer John Herschel.[7]

Characteristics

The morphological classification of SAbc[5] indicates NGC 2748 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.[8] 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.

  • SN 1985A (Type Ia, mag. 14.5) was discovered by Thomas Schildknecht on January 25, 1985, located 3″ west and 10″ south of the galaxy's nucleus.[9][10][11]
  • SN 2013ff (Type Ic, mag. 16) was discovered by Raffaele Belligoli and Flavio Castellani on August 31, 2013. It was positioned 19″ west and 21″ north of the core of NGC 2748, and eventually reached magnitude 15.2.[12][13][14]
  • AT 2015xf (type LRN, mag. 18.3) was discovered by Kōichi Itagaki on 10 February 2015.[15] The transient was originally classified as a luminous blue variable, a type of supernova impostor.[16][17] Later analysis concluded that it was actually a luminous red nova.[18]
  • SN 2017gkk (Type IIb, mag. 14.7) was discovered by MASTER on 19 August 2017,[19] and independently by Kōichi Itagaki on 31 August 2017.[20][21]

See also

References

  1. ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. 
  2. ↑ 2.0 2.1 2.2 "NGC 2748". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2748. 
  3. ↑ 3.0 3.1 3.2 Tully, R. Brent et al. (August 2016). "Cosmicflows-3". The Astronomical Journal 152 (2): 21. doi:10.3847/0004-6256/152/2/50. 50. Bibcode: 2016AJ....152...50T. 
  4. ↑ Frommert, Hartmut. "NGC 2748". http://spider.seds.org/ngc/ngc_fr.cgi?NGC_2748. 
  5. ↑ 5.0 5.1 5.2 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. doi:10.1111/j.1365-2966.2005.08904.x. Bibcode: 2005MNRAS.359..504A. 
  6. ↑ "Results for object NGC 2748". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+2748. 
  7. ↑ 7.0 7.1 Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 2700 - 2749". https://cseligman.com/text/atlas/ngc27.htm#2748. 
  8. ↑ 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. doi:10.1134/S1063773709090023. Bibcode: 2009AstL...35..587M. 
  9. ↑ Wild, P.; Schildknecht, T. (January 1985). Marsden, B. G.. ed. "Supernova 1985A in NGC 2748". IAU Circular 4031: 3. Bibcode: 1985IAUC.4031....3W. http://www.cbat.eps.harvard.edu/iauc/04000/04031.html#Item3. 
  10. ↑ "SN 1985A". IAU. https://www.wis-tns.org/object/1985A. 
  11. ↑ Wegner, Gary; McMahan, Robert K. (February 1987). "Spectroscopy of the Supernova 1982V, 1984A, and 1985B". Astronomical Journal 93: 287. doi:10.1086/114312. Bibcode: 1987AJ.....93..287W. 
  12. ↑ Green, D. W. E. (2013). "Supernova 2013ff in NGC 2748 = PSN J09133888+7628108". Central Bureau Electronic Telegrams (3656): 1. Bibcode: 2013CBET.3656....1G. 
  13. ↑ 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. 
  14. ↑ "SN 2013ff". IAU. https://www.wis-tns.org/object/2013ff. 
  15. ↑ Itagaki, K. (2025). "Padova-Asiago Transient Discovery Report for 2025-04-19". Transient Name Server Discovery Report 2025-1440: 1. Bibcode: 2025TNSTR1440....1I. https://www.wis-tns.org/object/2015fx/discovery-cert. 
  16. ↑ Tartaglia, L.; Pastorello, A.; Benetti, S.; Cappellaro, E.; Elias-Rosa, N.; Ochner, P.; Terreran, G.; Tomasella, L. et al. (12 February 2015). "Asiago spectroscopic observation of PSN J09132750+7627410". The Astronomer's Telegram 7051: 1. Bibcode: 2015ATel.7051....1T. https://www.astronomerstelegram.org/?read=7051. 
  17. ↑ Tartaglia, L. et al. (June 2016). "The Supernova Impostor PSN J09132750+7627410 and Its Progenitor". The Astrophysical Journal Letters 823 (2): 7. doi:10.3847/2041-8205/823/2/L23. L23. Bibcode: 2016ApJ...823L..23T. 
  18. ↑ "AT 2015xf". IAU. https://www.wis-tns.org/object/2015xf. 
  19. ↑ Balanutsa, P. et al. (2017). "MASTER discovery bright SN in NGC2748". The Astronomer's Telegram 10667: 1. Bibcode: 2017ATel10667....1B. https://www.astronomerstelegram.org/?read=10667. 
  20. ↑ "SN 2017gkk". IAU. https://www.wis-tns.org/object/2017gkk. 
  21. ↑ 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. https://www.astronomerstelegram.org/?read=10698. 

Coordinates: Sky map 09h 13m 43.0s, +76° 28′ 31″



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:NGC_2748&oldid=3922424"