Astronomy:SN 1990U
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Short description: Supernova in the galaxy NGC 7479
| Spectral class | SN Ic[1] |
|---|---|
| Date | July 27, 1990[1] |
| Constellation | Pegasus |
| Right ascension | 23h 04m 54.96s[2] |
| Declination | +12° 18′ 20.1″[2] |
| Epoch | J2000.0 |
| Galactic coordinates | 086.2501 -42.8526 |
| Distance | 105,000,000 ly |
| Redshift | 0.00794[3] |
| Host | NGC 7479 |
| Peak apparent magnitude | 16±0.5[1] |
SN 1990U was a type Ic supernova event in the nucleus of the galaxy NGC 7479. It was discovered July 27, 1990 by the Berkeley Automated Supernova Search after reaching magnitude 16±0.5.[1] Initially this was classified as a Type Ib supernova, but the weakness of the neutral helium absorption lines led to a reclassification.[4]
References
- ↑ 1.0 1.1 1.2 1.3 Gomez, G.; Lopez, R. (July 1994), "Spectral evolution of the He-Poor supernovae 1990U in NGC 7479 and 1991A in IC 2973", The Astronomical Journal 108 (1): 195–201, doi:10.1086/117058, Bibcode: 1994AJ....108..195G
- ↑ 2.0 2.1 Tsvetkov, D. Yu.; Pavlyuk, N. N.; Bartunov, O. S.; Pskovskii, Yu. P., Sternberg Astronomical Institute Supernova Catalogue, Sternberg Astronomical Institute, Moscow University, http://www.sai.msu.su/sn/sncat/, retrieved 2015-08-26
- ↑ Modjaz, M.; Kewley, L.; Bloom, J. S.; Filippenko, A. V.; Perley, D.; Silverman, J. M. (April 2011), "Progenitor Diagnostics for Stripped Core-collapse Supernovae: Measured Metallicities at Explosion Sites", The Astrophysical Journal Letters 731 (1): 6, doi:10.1088/2041-8205/731/1/L4, L4, Bibcode: 2011ApJ...731L...4M
- ↑ Matheson, Thomas; Filippenko, Alexei V.; Li, Weidong; Leonard, Douglas C.; Shields, Joseph C. (March 2001), "Optical Spectroscopy of Type IB/C Supernovae", The Astronomical Journal 121 (3): 1648–1675, doi:10.1086/319390, Bibcode: 2001AJ....121.1648M
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