Astronomy:SN 2013ej
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Short description: Supernova in the constellation Pisces
| Spectral class | SN II-P |
|---|---|
| Date | 25 July 2013 |
| Constellation | Pisces |
| Right ascension | 01h 36m 48.16s |
| Declination | +15° 45′ 31.0″ |
| Epoch | J2000.0 |
| Distance | 30±6 Mly |
| Host | Messier 74 (NGC 628) |
| Progenitor | ? |
| Progenitor type | Red supergiant |
| Colour (B-V) | Unknown |
| Notable features | N/A |
| Peak apparent magnitude | 12.1 |
SN 2013ej is a Type II-P supernova in the nearby spiral galaxy Messier 74 (NGC 628).[1] It was discovered by the Lick Observatory Supernova Search on July 25, 2013, with the 0.76 m Katzman Automatic Imaging Telescope, with pre-discovery images having been taken the day before.[2]
Supernova 2013ej was noted for being as bright as 12th magnitude.[3]
SN 2013ej was compared to supernovas SN 2004et and SN 2007od.[4] Based on various observations it has been theorized that the supernova originated from a red supergiant star that went supernova.[4]
SN 2013ej is one of the brightest Type II supernova detected to-date in NGC 628.[5]
References
- ↑ Valenti, S.; Sand, D.; Pastorello, A.; Graham, M. L.; Howell, D. A.; Parrent, J. T.; Tomasella, L.; Ochner, P. et al. (2013). "The first month of evolution of the slow-rising Type IIP SN 2013ej in M74". MNRAS Letters 438: L101–L105. doi:10.1093/mnrasl/slt171.
- ↑ "Supernovae 2013ej in M74". 16 May 2016. https://www.rochesterastronomy.org/sn2013/sn2013ej.html.
- ↑ "Bright supernova in M74" (in en-US). 2013-07-29. https://www.skyandtelescope.com/astronomy-news/observing-news/bright-supernova-in-m74/.
- ↑ 4.0 4.1 Huang, Fang; Wang, Xiaofeng; Zhang, Jujia; Brown, Peter J.; Zampieri, Luca; Pumo, Maria Letizia; Zhang, Tianmeng; Chen, Juncheng et al. (2015-04-02). "SN 2013ej in M74: A Luminous and Fast-declining Type II-P Supernova". The Astrophysical Journal 807 (1): 59. doi:10.1088/0004-637X/807/1/59. Bibcode: 2015ApJ...807...59H.
- ↑ Bose, Subhash; Sutaria, Firoza; Kumar, Brijesh; Duggal, Chetna; Misra, Kuntal; Brown, Peter J.; Singh, Mridweeka; Dwarkadas, Vikram et al. (2015-06-16). "SN 2013ej: A TYPE IIL SUPERNOVA WITH WEAK SIGNS OF INTERACTION" (in en). The Astrophysical Journal 806 (2): 160. doi:10.1088/0004-637x/806/2/160. ISSN 1538-4357. Bibcode: 2015ApJ...806..160B.
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