Astronomy:NGC 4051
NGC 4051 | |
---|---|
![]() Hubble Space Telescope image of NGC 4051 | |
Observation data (J2000 epoch) | |
Constellation | Ursa Major |
Right ascension | 12h 03m 09.686s[1] |
Declination | +44° 31′ 52.54″[1] |
Redshift | 0.002336[2] |
Helio radial velocity | 700 km/s[2] |
Distance | 54.14 ± 0.98 Mly (16.6 ± 0.3 Mpc)[3] |
Group or cluster | Ursa Major Cluster |
Apparent magnitude (V) | 12.92[4] |
Apparent magnitude (B) | 11.08[4] |
Characteristics | |
Type | SAB(rs)bc[2] |
Size | 78,800 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 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 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]
Three supernovae have been discovered in NGC 4051: SN 1983I (type Ic, mag. 13.5),[8] SN 2003ie (type II, mag. 15.2),[9] and SN 2010br (type Ib/c, mag. 17.7).[4][10]
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.[11]
NGC 4051 is a member of the Ursa Major Cluster.[12][13][14] Its peculiar velocity is −490 ± 34 km/s, consistent with the rest of the cluster.[3]
References
- ↑ 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.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "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.
- ↑ 3.0 3.1 Yuan, W.; Macri, L. M.; Peterson, B. M.; Riess, A. G.; Fausnaugh, M. M.; Hoffmann, S. L.; Anand, G. S.; Bentz, M. C. 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.
- ↑ 4.0 4.1 4.2 4.3 "NGC 4051". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4051.
- ↑ "New General Catalog Objects: NGC 4050 - 4099". http://cseligman.com/text/atlas/ngc40a.htm#4051.
- ↑ Denney, K. D.; Watson, L. C.; Peterson, B. M.; Pogge, R. W.; Atlee, D. W.; Bentz, M. C.; Bird, J. C.; Brokofsky, D. 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. doi:10.1088/0004-637X/702/2/1353. Bibcode: 2009ApJ...702.1353D.
- ↑ 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.
- ↑ Transient Name Server entry for SN 1983I. Retrieved 29 March 2023.
- ↑ Transient Name Server entry for SN 2003ie. Retrieved 29 March 2023.
- ↑ Transient Name Server entry for SN 2010br. Retrieved 29 March 2023.
- ↑ "Now you see it ...". New Scientist (2145): 23. 1 August 1998. https://www.newscientist.com/article/mg15921455-200-now-you-see-it/.
- ↑ 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.
- ↑ 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.
- ↑ "The Ursa Major Groups". http://www.atlasoftheuniverse.com/galgrps/uma.html.
Notes
External links
- NGC 4051 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SN 2010br 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
Coordinates: 12h 03m 09.6s, +44° 31′ 55″
![]() | Original source: https://en.wikipedia.org/wiki/NGC 4051.
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