NGC 3972 is a spiral galaxy located in the northern constellation of Ursa Major. It was discovered by William Herschel on April 14, 1789.[7] This galaxy is located 66 million light years away and is receding with a heliocentric radial velocity of 846 km/s.[2] It is a member of the NGC 3992 Group of galaxies.[4]
| NGC 3972 | |
|---|---|
 NGC 3972 imaged by tne Hubble Space Telescope.[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 55m 45.1s[2] |
| Declination | +55° 19′ 14″[2] |
| Redshift | 0.002799[3] |
| Heliocentric radial velocity | 846 km/s[2] |
| Distance | 66.0 Mly (20.23 Mpc)[2] |
| Group or cluster | NGC 3992 Group[4] |
| Apparent magnitude (V) | 13.14[3] |
| Characteristics | |
| Type | SA(s)bc,[5] SBbc[6] |
| Size | c. 50,000 ly |
| Other designations | |
| IRAS 11531+5535, 2MASX J11554511+5519144, UGC 6904, LEDA 37466, MCG +09-20-032[3] | |
Two supernovae have been observed in NGC 3972. Type Ia supernova SN 2011by was discovered in this galaxy on April 26, 2011, by Zhangwei Jin and Xing Gao in China. It was magnitude 14.2 ten days short of maximum, and positioned at an offset 5.3″ east and 19.1″ north of the galactic nucleus.[8][9] Also, SN 2021acna (type II, mag. 19.4) was discovered on 30 October 2021.[10]
Gallery
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NGC 3972 by the Sloan Digital Sky Survey
See also
editReferences
edit- ^ "Galaxy full of cosmic lighthouses". www.spacetelescope.org. Retrieved 5 March 2018.
- ^ a b c d e Tully, R. Brent; et al. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
- ^ a b c "NGC 3972". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-12-20.
- ^ a b Karachentsev, I. D.; et al. (March 2013). "Anatomy of Ursa Majoris". Monthly Notices of the Royal Astronomical Society. 429 (3): 2264–2273. arXiv:1211.5975. Bibcode:2013MNRAS.429.2264K. doi:10.1093/mnras/sts494.
- ^ "Results for object NGC 3972 (NGC 3972)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-18.
- ^ Paturel, G.; et al. (December 2003). "HYPERLEDA. I. Identification and designation of galaxies". Astronomy and Astrophysics. 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
- ^ Seligman, Courtney. "New General Catalog Objects: NGC 3950 - 3999". cseligman.com. Retrieved 2021-03-12.
- ^ Boyd, David (September 2011). "SN 2011BY - A Type 1A Supernova in NGC 3972 Discovered before maximum". British Astronomical Association Variable Star Section Circular. 149 (149): 10–12. Bibcode:2011BAAVC.149...10B.
- ^ "SN 2011by". Transient Name Server. IAU. Retrieved 4 September 2024.
- ^ "SN 2021acna". Transient Name Server. IAU. Retrieved 4 September 2024.
External links
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Media related to NGC 3972 at Wikimedia Commons- NGC 3972 on SIMBAD
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