NGC 4051

NGC 4051是一个位于大熊座的中間螺旋星系，1788年2月6日由約翰·赫歇爾发现。星系中心的超大質量黑洞质量为173万M☉。人们在星系内观测到超新星SN 1983I、SN 2010br和N 2003ie。NGC 4051是西佛星系，属于大熊座星系团（英语：Ursa Major Cluster），本動速度为490 ± 34 km/s。 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. The Two Micron All Sky Survey (2MASS). The Astronomical Journal. 1 February 2006, 131: 1163–1183 [2022-06-29]. ISSN 0004-6256. doi:10.1086/498708. （原始内容存档于2022-04-02）.  NED results for object NGC 3697. National Aeronautics and Space Administration / Infrared Processing and Analysis Center（英语：Infrared Processing and Analysis Center）. [9 November 2017].  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. The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051. The Astrophysical Journal. 2021, 913 (1): 3. Bibcode:2021ApJ...913....3Y. S2CID 228375026. arXiv:2012.05931 . doi:10.3847/1538-4357/abf24a.  NGC 4051. SIMBAD. 斯特拉斯堡天文資料中心.  New General Catalog Objects: NGC 4050 - 4099. cseligman.com. [9 November 2017]. （原始内容存档于2010-06-28）.  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. A revised broad-line region radius and black hole mass for the narrow-line Seyfert 1 NGC 4051. The Astrophysical Journal. 2009, 702 (2): 1353–1366. Bibcode:2009ApJ...702.1353D. S2CID 2528509. arXiv:0904.0251 . doi:10.1088/0004-637X/702/2/1353.  Now you see it .... New Scientist. 1 August 1998, (2145): 23 [2022-06-29]. （原始内容存档于2022-06-29）.  Tully, R. Brent; Verheijen, Marc A. W.; Pierce, Michael J.; Huang, Jia-Sheng; Wainscoat, Richard J. The Ursa Major Cluster of Galaxies.I.Cluster Definition and Photometric Data. The Astronomical Journal. December 1996, 112: 2471. Bibcode:1996AJ....112.2471T. ISSN 0004-6256. S2CID 7875515. arXiv:astro-ph/9608124 . doi:10.1086/118196 （英语）.  P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel; Gourgoulhon; Chamaraux; Paturel. Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. Astronomy and Astrophysics Supplement. 1992, 93: 211–233. Bibcode:1992A&AS...93..211F.  The Ursa Major Groups. www.atlasoftheuniverse.com. [2018-04-20]. （原始内容存档于2018-08-01）.  POSS1 103a-O values used. 维基共享资源上的相关多媒体资源：NGC 4051 WikiSky上关于NGC 4051的内容：DSS2, SDSS, GALEX, IRAS, 氢α, X射线, 天文照片, 天图, 文章和图片 SN 2010br （页面存档备份，存于互联网档案馆） located 19".5 east and 10" south of the center at 12 03 10.96 +44 31 42.8 / Wikisky DSS2 zoom-in of same region （页面存档备份，存于互联网档案馆）