SN 1999ec was a type Ib supernova that was discovered in the interacting galaxy NGC 2207 on October 2, 1999.[2] It was found on images taken with the Katzman Automatic Imaging Telescope at the Lick Observatory.[2] The progenitor is estimated to have had 38 times the mass of the Sun and was 5.34 million years old at the time of the outburst.[1]
| Event type | Supernova  |
|---|---|
| SN Ib[1] | |
| Date | October 2, 1999[2] |
| Constellation | Canis Major |
| Right ascension | 06h 16m 16.16s[2] |
| Declination | −21° 22′ 09.8″[2] |
| Epoch | J2000.0 |
| Galactic coordinates | 228.6723 -17.0277 |
| Distance | 31.3 Mpc[1] |
| Host | NGC 2207) |
| Progenitor | 38 M☉ star |
| Peak apparent magnitude | 17.9[3] |
| Other designations | SN 1999ec |
References
edit- ^ a b c Kuncarayakti, Hanindyo; et al. (August 2013), "Integral Field Spectroscopy of Supernova Explosion Sites: Constraining the Mass and Metallicity of the Progenitors. I. Type Ib and Ic Supernovae", The Astronomical Journal, 146 (2): 14 pp, arXiv:1305.1105, Bibcode:2013AJ....146...30K, doi:10.1088/0004-6256/146/2/30, S2CID 118671861, 30
- ^ a b c d e Jha, S.; et al. (1999). "Supernova 1999ec in NGC 2207". IAU Circular. 7269: 2. Bibcode:1999IAUC.7269....2J.
- ^ Barbon, R.; et al. (1999-11-01). "The Asiago Supernova Catalogue - 10 years after". Astronomy and Astrophysics Supplement Series. 139 (3): 531–536. arXiv:astro-ph/9908046. Bibcode:1999A&AS..139..531B. doi:10.1051/aas:1999404. S2CID 40532321.
External links
edit- Spectra Archived 2017-11-14 at the Wayback Machine on the Open Supernova Catalog
- Simbad
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