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NGC 4051 is an intermediate spiral galaxy in the constellation of Ursa Major.[2] It was discovered on 6 February 1788 by John Herschel.[5]

NGC 4051
Hubble Space Telescope image of NGC 4051
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension12h 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
UGC 7030, MGC+08-22-059, PGC 38068[4]

NGC 4051 contains a supermassive black hole with a mass of 1.73 million M☉.[6] This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring 2m telescope.[7] Several supernovae have been discovered in NGC 4051: SN 1983I, SN 2010br, and SN 2003ie.[4]

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.[8]

NGC 4051 is a member of the Ursa Major Cluster.[9][10][11] Its peculiar velocity is −490 ± 34 km/s, consistent with the rest of the cluster.[3]


References


  1. 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: 1163–1183. doi:10.1086/498708. ISSN 0004-6256.
  2. "NED results for object NGC 3697". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 9 November 2017.
  3. Yuan, W.; Macri, L. M.; Peterson, B. M.; Riess, A. G.; Fausnaugh, M. M.; Hoffmann, S. L.; Anand, G. S.; Bentz, M. C.; Dalla Bontà, E.; Davies, R. I.; De Rosa, G.; Ferrarese, L.; Grier, C. J.; Hicks, E. K. S.; Onken, C. A.; Pogge, R. W.; Storchi-Bergmann, T.; Vestergaard, M. (2021). "The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051". The Astrophysical Journal. 913 (1): 3. arXiv:2012.05931. Bibcode:2021ApJ...913....3Y. doi:10.3847/1538-4357/abf24a. S2CID 228375026.
  4. "NGC 4051". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 November 2017.
  5. "New General Catalog Objects: NGC 4050 - 4099". cseligman.com. Retrieved 9 November 2017.
  6. Denney, K. D.; Watson, L. C.; Peterson, B. M.; Pogge, R. W.; Atlee, D. W.; Bentz, M. C.; Bird, J. C.; Brokofsky, D. J.; Comins, M. L.; Dietrich, M.; Doroshenko, V. T.; Eastman, J. D.; Efimov, Y. S.; Gaskell, C. M.; Hedrick, C. H.; Klimanov, S. A.; Klimek, E. S.; Kruse, A. K.; Lamb, J. B.; Leighly, K.; Minezaki, T.; Nazarov, S. V.; Petersen, E. A.; Peterson, P.; Poindexter, S.; Schlesinger, Y.; Sakata, K. J.; Sergeev, S. G.; Tobin, J. J.; 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. arXiv:0904.0251. Bibcode:2009ApJ...702.1353D. doi:10.1088/0004-637X/702/2/1353. S2CID 2528509.
  7. Suganuma, Masahiro; Yoshii, Yuzuru; Kobayashi, Yukiyasu; Minezaki, Takeo; Enya, Keigo; Tomita, Hiroyuki; Aoki, Tsutomu; Koshida, Shintaro; Peterson, Bruce A. (2006). "Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies". The Astrophysical Journal. 639 (1): 46–63. arXiv:astro-ph/0511697. Bibcode:2006ApJ...639...46S. doi:10.1086/499326. ISSN 0004-637X. S2CID 7671684.
  8. "Now you see it ..." New Scientist (2145): 23. 1 August 1998.
  9. 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". The Astronomical Journal. 112: 2471. arXiv:astro-ph/9608124. Bibcode:1996AJ....112.2471T. doi:10.1086/118196. ISSN 0004-6256. S2CID 7875515.
  10. 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.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  11. "The Ursa Major Groups". www.atlasoftheuniverse.com. Retrieved 2018-04-20.

Notes


  1. POSS1 103a-O values used.


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На других языках

[de] NGC 4051

NGC 4051 ist eine Balken-Spiralgalaxie mit aktivem Galaxienkern vom Hubble-Typ SBbc im Sternbild Großer Bär am Nordsternhimmel. Sie ist schätzungsweise 33 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 50.000 Lichtjahren. Die Galaxie enthält ein supermassives Schwarzes Loch mit einer Masse von 1,73 Millionen Sonnenmassen und ist als Seyfert-1,5-Galaxie klassifiziert. Sie ist Teil M109-Gruppe und hellstes Mitglied der NGC 4051-Gruppe (LGG 269).
- [en] NGC 4051

[ru] NGC 4051

NGC 4051 (другие обозначения — UGC 7030, MCG 8-22-59, ZWG 243.38, IRAS12005+4448, PGC 38068) — спиральная галактика с перемычкой в созвездии Большой Медведицы. Относится к сейфертовским галактикам.


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