Astronomy:NGC 2980
| NGC 2980 | |
|---|---|
 NGC 2980 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Sextans |
| Right ascension | 09h 43m 11.9880s[1] |
| Declination | −09° 36′ 44.820″[1] |
| Redshift | 0.019160±0.0000120[1] |
| Helio radial velocity | 5,744±4 km/s[1] |
| Distance | 257.99 ± 9.79 Mly (79.100 ± 3.003 Mpc)[2] |
| Apparent magnitude (V) | 13.6[1] |
| Characteristics | |
| Type | SAB(s)c[1] |
| Size | ~154,600 ly (47.40 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 0.9′[1] |
| Other designations | |
| IRAS 09407-0923, MCG-01-25-028, PGC 27799[1] | |
NGC 2980 is an intermediate spiral galaxy in the constellation of Sextans. Its velocity with respect to the cosmic microwave background is 6,088±24 km/s, which corresponds to a Hubble distance of 292.9 ± 20.5 Mly (89.79 ± 6.30 Mpc).[1] However, 12 non-redshift measurements give a closer mean distance of 257.99 ± 9.79 Mly (79.100 ± 3.003 Mpc).[2] It was discovered by German-British astronomer William Herschel on 27 March 1786.[3][4]
NGC 2980 is a Seyfert II galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[5][6]
Supernovae
Two supernovae have been observed in NGC 2980:
- SN 2006ba (Type IIb, mag. 18.4) was discovered by Berto Monard (it) on 19 March 2006.[7][8]
- SN 2009lm (Type II-P, mag. 18.5) was discovered by the Lick Observatory Supernova Search (LOSS) on 17 November 2009.[9][10]
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Results for object NGC 2980". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+2980.
- ↑ 2.0 2.1 "Distance Results for NGC 2980". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+2980.
- ↑ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London 79: 212–255. doi:10.1098/rstl.1789.0021. Bibcode: 1789RSPT...79..212H.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2980". https://cseligman.com/text/atlas/ngc29a.htm#2980.
- ↑ Chen, Yan-Ping; Zaw, Ingyin; Farrar, Glennys R.; Elgamal, Sana (2022). "A Uniformly Selected, Southern-sky 6dF, Optical AGN Catalog". The Astrophysical Journal Supplement Series 258 (2): 29. doi:10.3847/1538-4365/ac4157. Bibcode: 2022ApJS..258...29C.
- ↑ "NGC 2980". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2980.
- ↑ Monard, L. A. G.; Martin, R.; Ponticello, N. J.; Li, W.; Puckett, T.; Gagliano, R.; Cox, L. (2006). "Supernovae 2006ba, 2006bb, 2006bc, 2006bd, 2006be, 2006bf". International Astronomical Union Circular (8693): 1. Bibcode: 2006IAUC.8693....1M. http://www.cbat.eps.harvard.edu/iauc/08600/08693.html#Item1.
- ↑ "SN 2006ba". IAU. https://www.wis-tns.org/object/2006ba.
- ↑ Choi, J.; Cenko, S. B.; Li, W.; Filippenko, A. V.; Brimacombe, J. (2009). "Supernova 2009lm in NGC 2980". Central Bureau Electronic Telegrams (2032): 1. Bibcode: 2009CBET.2032....1C. http://www.cbat.eps.harvard.edu/cbet/002000/CBET002032.txt.
- ↑ "SN 2009lm". IAU. https://www.wis-tns.org/object/2009lm.
External links
- NGC 2980 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
09h 43m 11.9880s, −09° 36′ 44.820″
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