NGC 2082

NGC 2082
NGC 2082 imaged by the Hubble Space Telescope
Observation data (2000.0 epoch)
Constellation	Dorado
Right ascension	05^h 41^m 51.3141^s[1]
Declination	−64° 18′ 04.37″[1]
Redshift	0.003950[1]
Heliocentric radial velocity	1184 km/s[1]
Distance	60 Mly (18.5 Mpc)[1]
Apparent magnitude (V)	12.62[1]
Characteristics
Type	SB(r)b[1]
Mass	8×10^9 (Stellar mass)[2] M☉
Size	~33,100 ly (10.16 kpc) (estimated)[1]
Apparent size (V)	1.8 × 1.7[1]
Other designations
ESO 086- G 021, IRAS 05415-6419, PGC 17609[1]

NGC 2082 is a barred spiral galaxy located approximately 60 million light-years away^[3] the constellation Dorado. It was discovered November 30, 1834 by John Herschel.^[4] The galaxy was originally considered to be part of the Dorado Group of galaxies,^[5] but was later removed from the list.^[6] NGC 2082 is now considered a member of the nearby NGC 1947 Group^[7][8][9] which is part of the Southern Supercluster.^[8]

NGC 2082 is host to an irregular bulge^[10] that is host to many star forming regions that are interspersed with dust. It is thought that the star formation occurring in the center of the galaxy is the result of gas inflow to the center.^[11] Surrounding the center of NGC 2082, the spiral arms of the galaxy are irregular and reach close to the center.^[12] The galaxy is host to a nuclear star cluster with an estimated mass of 3 × 10⁶ M_☉,^[2] and a supermassive black hole with an estimated mass 6.2 × 10⁶ M_☉.^[13] It is also home to a population of 27 known globular clusters.^[14]

One supernova has been observed in NGC 2082. SN 1992ba (Type II, mag. 14) was discovered by Robert Evans on 30 September 1992.^[15][16]

See also

• List of NGC objects (1001–2000)

References

1. "NASA/IPAC Extragalactic Database". Results for object NGC 2082. Retrieved 2024-10-22.
2. Seth, Anil; Agüeros, Marcel; Lee, Duane; Basu-Zych, Antara (2008-05-01). "The Coincidence of Nuclear Star Clusters and Active Galactic Nuclei". The Astrophysical Journal. 678 (1): 116–130. arXiv:0801.0439. Bibcode:2008ApJ...678..116S. doi:10.1086/528955. ISSN 0004-637X.
3. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-10-23.
4. "New General Catalog Objects: NGC 2050 - 2099". cseligman.com. Retrieved 2024-10-23.
5. Huchra, J. P.; Geller, M. J. (June 15, 1982). "Groups of galaxies. I - Nearby groups". Astrophysical Journal. 257 (Part 1): 423–437. Bibcode:1982ApJ...257..423H. doi:10.1086/160000.
6. Maia, M. A. G.; da Costa, L. N.; Latham, David W. (April 1989). "A catalog of southern groups of galaxies". Astrophysical Journal Supplement Series. 69: 09–829. Bibcode:1989ApJS...69..809M. doi:10.1086/191328. ISSN 0067-0049.
7. Tully, R. Brent (1988). Nearby galaxies catalog (1. publ ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
8. Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
9. Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (2000-11-01). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". The Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. ISSN 0004-637X.
10. Carollo, C. M.; Scarlata, C.; Stiavelli, M.; Wyse, R. F. G.; Mayer, L. (2007-04-01). "Old and Young Bulges in Late-Type Disk Galaxies". The Astrophysical Journal. 658 (2): 960–979. arXiv:astro-ph/0610638. Bibcode:2007ApJ...658..960C. doi:10.1086/511125. ISSN 0004-637X.
11. Carollo, C. Marcella; Stiavelli, Massimo; Seigar, Marc; de Zeeuw, P. Tim; Dejonghe, Herwig (2002-01-01). "Spiral Galaxies with HST/NICMOS. I. Nuclear Morphologies, Color Maps, and Distinct Nuclei". The Astronomical Journal. 123 (1): 159–183. arXiv:astro-ph/0110281. Bibcode:2002AJ....123..159C. doi:10.1086/324725. ISSN 0004-6256.
12. Carollo, C. M.; Stiavelli, M.; Mack, J. (1998-07-01). "Spiral Galaxies with WFPC2. II. The Nuclear Properties of 40 Objects". The Astronomical Journal. 116 (1): 68–84. arXiv:astro-ph/9804007. Bibcode:1998AJ....116...68C. doi:10.1086/300407. ISSN 0004-6256.
13. Arzoumanian, Zaven; Baker, Paul T.; Brazier, Adam; Brook, Paul R.; Burke-Spolaor, Sarah; Becsy, Bence; Charisi, Maria; Chatterjee, Shami; Cordes, James M.; Cornish, Neil J.; Crawford, Fronefield; Cromartie, H. Thankful; Decesar, Megan E.; Demorest, Paul B.; Dolch, Timothy (2021-06-01). "The NANOGrav 11 yr Data Set: Limits on Supermassive Black Hole Binaries in Galaxies within 500 Mpc". The Astrophysical Journal. 914 (2): 121. arXiv:2101.02716. Bibcode:2021ApJ...914..121A. doi:10.3847/1538-4357/abfcd3. ISSN 0004-637X.
14. Harris, William E.; Harris, Gretchen L. H.; Alessi, Matthew (2013-08-01). "A Catalog of Globular Cluster Systems: What Determines the Size of a Galaxy's Globular Cluster Population?". The Astrophysical Journal. 772 (2): 82. arXiv:1306.2247. Bibcode:2013ApJ...772...82H. doi:10.1088/0004-637X/772/2/82. ISSN 0004-637X.
15. Evans, R.; Phillips, M. M. (1992-10-01). "Supernova 1992ba in NGC 2082". International Astronomical Union Circular (5625): 2. Bibcode:1992IAUC.5625....2E. ISSN 0081-0304.
16. "SN 1992ba". Transient Name Server. IAU. Retrieved 6 December 2024.

External links

• Media related to NGC 2082 at Wikimedia Commons