NGC 4051 explained

NGC 4051
Epoch:J2000
Constellation Name:Ursa Major
Ra:[1]
Z:0.002336[2]
H Radial V:700 km/s
Dist Ly:[3]
Group Cluster:Ursa Major Cluster
Type:SAB(rs)bc
Appmag V:12.92
Appmag B:11.08[4]
Size V:6.00 × 4.98[5]
Names:UGC 7030, MGC+08-22-059, PGC 38068

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

NGC 4051 contains a supermassive black hole with a mass of 1.73 million .[7] This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring 2m telescope.[8]

Three supernovae have been discovered in NGC 4051: SN 1983I (type Ic, mag. 13.5),[9] SN 2003ie (type II, mag. 15.2),[10] and SN 2010br (type Ib/c, mag. 17.7).[4] [11]

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.[12]

NGC 4051 is a member of the Ursa Major Cluster.[13] [14] [15] Its peculiar velocity is -490 ± 34 km/s, consistent with the rest of the cluster.[3]

External links

Notes and References

  1. 10.1086/498708 . 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 . 2 . 1163–1183 . 2006AJ....131.1163S . 18913331 . 0004-6256 . free .
  2. Web site: NED results for object NGC 3697. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. 9 November 2017.
  3. 10.3847/1538-4357/abf24a. The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051. 2021. 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 Astrophysical Journal. 913. 1. 3. 2012.05931. 2021ApJ...913....3Y. 228375026 . free .
  4. NGC 4051. 9 November 2017.
  5. POSS1 103a-O values used.
  6. Web site: New General Catalog Objects: NGC 4050 - 4099. cseligman.com. 9 November 2017.
  7. 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. 10.1088/0004-637X/702/2/1353. 2009. 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.. Unterborn. C.. 29. 2009ApJ...702.1353D. 0904.0251. 2528509.
  8. Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies. Suganuma. Masahiro. Yoshii. Yuzuru. Kobayashi. Yukiyasu. Minezaki. Takeo. Enya. Keigo. Tomita. Hiroyuki. Aoki. Tsutomu. Koshida. Shintaro. Peterson. Bruce A.. The Astrophysical Journal. 0004-637X. 639. 1. 2006. 46–63. 10.1086/499326. astro-ph/0511697. 2006ApJ...639...46S. 7671684.
  9. https://www.wis-tns.org/object/1983I Transient Name Server entry for SN 1983I.
  10. https://www.wis-tns.org/object/2003ie Transient Name Server entry for SN 2003ie.
  11. https://www.wis-tns.org/object/2010br Transient Name Server entry for SN 2010br.
  12. Now you see it .... 1 August 1998. New Scientist. 2145. 23.
  13. 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. en. 112. 2471. 10.1086/118196. 0004-6256. astro-ph/9608124. 1996AJ....112.2471T. 7875515.
  14. P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel . Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members . Astronomy and Astrophysics Supplement . 1992 . 93 . 211–233 . 1992A&AS...93..211F . Gourgoulhon . Chamaraux . Paturel.
  15. Web site: The Ursa Major Groups. www.atlasoftheuniverse.com. 2018-04-20.

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