Astronomy:SN 2013fs
| Spectral class | IIP (was IIN )[1] |
|---|---|
| Date | October 6, 2013 |
| Constellation | Pegasus |
| Right ascension | 23h 19m 44.67s |
| Declination | +10° 11′ 04.5″ |
| Epoch | J2000 |
| Galactic coordinates | 089.0254 -46.5583 |
| Distance | 160 Mly |
| Host | NGC 7610 |
| Progenitor | Unknown |
| Progenitor type | Red Supergiant[2] |
| Notable features | Earliest detailed observations of a supernova ever made. |
SN 2013fs is a supernova, located in the spiral galaxy NGC 7610, discovered by the Intermediate Palomar Transient Factory sky survey at Palomar Observatory in October 2013 (and originally named iPTF 13dqy).[3] It was discovered approximately three hours from explosion (first light) and was observed in ultraviolet and X-ray wavelengths, among others, within several hours.[2] Optical spectra were obtained beginning at six hours from explosion, making these the earliest such detailed observations ever made of a supernova.[2]
The star that produced SN 2013fs was a red supergiant with a mass 10 times the mass of the Sun, an effective temperature of 3,500 K, a radius 607[4] times the size of the Sun, and no more than a few million years old when it exploded.[2] The star was surrounded by a relatively dense shell of gas shed by the star within the year before it exploded.[3] Radiation emitted by the supernova explosion illuminated this shell, which had a mass of approximately one-thousandth the mass of the Sun, and its outer fringe was about five times the distance of Neptune from the Sun.[2]
References
- ↑ "Bright Supernovae 2013". http://www.rochesterastronomy.org/sn2013/index.html#2013fs. Retrieved 15 February 2017.
- ↑ 2.0 2.1 2.2 2.3 2.4 Perkins, Sid. "Exploding Star Yields its Secrets". AAAS. https://www.science.org/content/article/exploding-star-yields-its-secrets. Retrieved 15 February 2017.
- ↑ 3.0 3.1 Yaron, O.; Perley, D. A.; Gal-Yam, A.; Groh, J. H.; Horesh, A.; Ofek, E. O.; Kulkarni, S. R.; Sollerman, J. et al. (2017). "Confined dense circumstellar material surrounding a regular type II supernova". Nature Physics 13 (5): 510. doi:10.1038/nphys4025. Bibcode: 2017NatPh..13..510Y.
- ↑ Moriya, Takashi J; Yoon, Sung-Chul; Gräfener, Götz; Blinnikov, Sergei I (2017). "Immediate dense circumstellar environment of supernova progenitors caused by wind acceleration: Its effect on supernova light curves". Monthly Notices of the Royal Astronomical Society: Letters 469 (1): L108–L112. doi:10.1093/mnrasl/slx056. Bibcode: 2017MNRAS.469L.108M.
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