Astronomy:NGC 4051

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NGC 4051
NGC 4051 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension 12h 03m 09.686s[1]
Declination+44° 31′ 52.54″[1]
Redshift0.002336[2]
Helio radial velocity700 km/s[2]
Distance54.14 ± 0.98 Mly (16.6 ± 0.3 Mpc)[3]
Group or clusterUrsa Major Cluster
Apparent magnitude (V)12.92[4]
Apparent magnitude (B)11.08[4]
Characteristics
TypeSAB(rs)bc[2]
Size78,800 ly (24,160 pc)[2][note 1]
Apparent size (V)6.00′ × 4.98′[2][note 1]
Other designations
IRAS 12005+4448, UGC 7030, PGC 38068[4][2]

NGC 4051 is an intermediate spiral galaxy in the constellation of Ursa Major.[2] It was discovered on 6 February 1788 by William Herschel.

NGC 4051 contains a supermassive black hole with a mass of 1.73 million M☉.[5] This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring 2m telescope.[6]

The galaxy is a Seyfert galaxy that emits bright X-rays. However, in early 1998 the X-ray emission ceased as observed by the Beppo-SAX satellite. X-ray emission had risen back to normal by August 1998.[7]

NGC 4051 is a member of the Ursa Major Cluster.[8][9][10] Its peculiar velocity is −490 ± 34 km/s, consistent with the rest of the cluster.[3] It is a member of the NGC 4111 Group,[11][12] which is part of the Ursa Major Cloud and is the second largest group in the cloud after the NGC 3992 Group.[13][14][15]

Supernovae

Three supernovae have been discovered in NGC 4051:

  • SN 1983I (Type Ic, mag. 13.5) was discovered independently by J. Kielkopf et al, on 11 May 1983, and by Tsvetkov on 12 May 1983.[16][17]
  • SN 2003ie (Type II, mag. 15.2) was discovered by Ron Arbour on 19 September 2003.[18][19]
  • SN 2010br (Type Ib/c, mag. 17.7) was discovered by Vitali Nevski on 10 April 2010.[20][21]

References

  1. ↑ 1.0 1.1 Skrutskie, Michael F. 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 2.3 2.4 2.5 2.6 "NED results for object NGC 3697". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+4051&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES. 
  3. ↑ 3.0 3.1 Yuan, W. et al. (2021). "The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051". The Astrophysical Journal 913 (1): 3. doi:10.3847/1538-4357/abf24a. Bibcode: 2021ApJ...913....3Y. 
  4. ↑ 4.0 4.1 4.2 "NGC 4051". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4051. 
  5. ↑ Denney, K. D. et al. (2009). "A revised broad-line region radius and black hole mass for the narrow-line Seyfert 1 NGC 4051". The Astrophysical Journal 702 (2): 1353–1366. doi:10.1088/0004-637X/702/2/1353. Bibcode: 2009ApJ...702.1353D. 
  6. ↑ Suganuma, Masahiro; Yoshii, Yuzuru; Kobayashi, Yukiyasu; Minezaki, Takeo; Enya, Keigo; Tomita, Hiroyuki; Aoki, Tsutomu; Koshida, Shintaro et al. (2006). "Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies". The Astrophysical Journal 639 (1): 46–63. doi:10.1086/499326. ISSN 0004-637X. Bibcode: 2006ApJ...639...46S. 
  7. ↑ "Now you see it ...". New Scientist (2145): 23. 1 August 1998. https://www.newscientist.com/article/mg15921455-200-now-you-see-it/. 
  8. ↑ Tully, R. Brent; Verheijen, Marc A. W.; Pierce, Michael J.; Huang, Jia-Sheng; Wainscoat, Richard J. (December 1996). "The Ursa Major Cluster of Galaxies.I.Cluster Definition and Photometric Data" (in en). The Astronomical Journal 112: 2471. doi:10.1086/118196. ISSN 0004-6256. Bibcode: 1996AJ....112.2471T. 
  9. ↑ P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel; Gourgoulhon; Chamaraux; Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement 93: 211–233. Bibcode: 1992A&AS...93..211F. 
  10. ↑ "The Ursa Major Groups". http://www.atlasoftheuniverse.com/galgrps/uma.html. 
  11. ↑ Makarov, Dmitry; Karachentsev, Igor (2011-04-21). "Galaxy groups and clouds in the local (z∼ 0.01) Universe: Galaxy groups in the local Universe" (in en). Monthly Notices of the Royal Astronomical Society 412 (4): 2498–2520. doi:10.1111/j.1365-2966.2010.18071.x. 
  12. ↑ Kourkchi, Ehsan; Tully, R. Brent (2017-07-01). "Galaxy Groups Within 3500 km s −1". The Astrophysical Journal 843 (1): 16. doi:10.3847/1538-4357/aa76db. ISSN 0004-637X. 
  13. ↑ Karachentsev, I. D.; Nasonova, O. G.; Courtois, H. M. (2013-03-01). "Anatomy of Ursa Majoris" (in en). Monthly Notices of the Royal Astronomical Society 429 (3): 2264–2273. doi:10.1093/mnras/sts494. ISSN 1365-2966. http://academic.oup.com/mnras/article/429/3/2264/1004796/Anatomy-of-Ursa-Majoris. 
  14. ↑ Pak, Mina; Rey, Soo-Chang; Lisker, Thorsten; Lee, Youngdae; Kim, Suk; Sung, Eon-Chang; Jerjen, Helmut; Chung, Jiwon (2014-09-29). "The properties of early-type galaxies in the Ursa Major cluster" (in en). Monthly Notices of the Royal Astronomical Society 445 (1): 630–647. doi:10.1093/mnras/stu1722. ISSN 0035-8711. http://academic.oup.com/mnras/article/445/1/630/986927/The-properties-of-earlytype-galaxies-in-the-Ursa. 
  15. ↑ Ai, Mei et al. (2025-04-01). "Formation of the Dark Matter–Deficient S0 Galaxy NGC 4111 under the Tidal Interactions". The Astrophysical Journal Letters 982 (2): L52. doi:10.3847/2041-8213/adbeee. ISSN 2041-8205. Bibcode: 2025ApJ...982L..52A. 
  16. ↑ Aksenov, E. P.; Kielkopf, J.; Brashaer, R.; Goldstein, A.; Gabart, R. (1983). "Supernovae". International Astronomical Union Circular (3813): 1. Bibcode: 1983IAUC.3813....1A. 
  17. ↑ "SN 1983I". IAU. https://www.wis-tns.org/object/1983I. 
  18. ↑ Arbour, R.; Boles, T. (2003). "Supernova 2003ie in NGC 4051". International Astronomical Union Circular (8205): 1. Bibcode: 2003IAUC.8205....1A. http://www.cbat.eps.harvard.edu/iauc/08200/08205.html#Item1. 
  19. ↑ "SN 2003ie". IAU. https://www.wis-tns.org/object/2003ie. 
  20. ↑ Maksym, A.; Elenin, L.; Schwartz, M. (2010). "Supernova 2010br in NGC 4051". Central Bureau Electronic Telegrams (2245): 1. Bibcode: 2010CBET.2245....1M. http://www.cbat.eps.harvard.edu/iau/cbet/002200/CBET002245.txt. 
  21. ↑ "SN 2010br". IAU. https://www.wis-tns.org/object/2010br. 

Notes

  1. ↑ 1.0 1.1 POSS1 103a-O values used.

Coordinates: Sky map 12h 03m 09.6s, +44° 31′ 55″




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