SN 2005gl
| File:Hubble Finds Rare Progenitor to Supernova SN 2005gl.jpg Supernova 2005gl in galaxy NGC 266 | |
| Type IIn | |
| Date | 2005-10-05 |
|---|---|
| Constellation | Pisces |
| Right ascension | 00h 49m 50.02s[1] |
| Declination | +32° 16′ 56.8″[1] |
| Epoch | J2000.0 |
| Distance | 66 Mpc |
| Host | NGC 266 |
| Progenitor | NGC266_LBV 1[2] |
| Progenitor type | Luminous blue variable |
| Peak apparent magnitude | 16.17[3] |
| Other designations | Lua error in Module:Wikidata at line 448: attempt to index field 'wikibase' (a nil value). |
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SN 2005gl was a supernova in the barred-spiral galaxy NGC 266. It was discovered using CCD frames taken October 5, 2005, from the 60 cm automated telescope at the Puckett Observatory in Georgia, US, and reported by Tim Puckett in collaboration with Peter Ceravolo. It was independently identified by Yasuo Sano in Japan.[1] The supernova event took place sometime between September 10 and October 5 of 2005.[4] It was located 29.8″ east and 16.7″ north of the galactic core.[5]Based upon its spectrum, this was classified as a Type IIn core-collapse supernova. It has a redshift of z = 0.016, which is the same as the host galaxy.[6]
Using archived images from the Hubble Space Telescope, a candidate progenitor star was identified. This is believed to have been a luminous blue variable (LBV), similar to Eta Carinae, with an absolute magnitude of −10.3 and a surface temperature of about 13,000 K. There was a small probability that the source was instead located in a compact cluster of stars,[4] but the association with the LBV has since been reliably established.[2]
References
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External links
[edit | edit source]- Light curves and spectra Archived 2017-10-23 at the Wayback Machine on the Open Supernova Catalog Archived 2016-03-03 at the Wayback Machine
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