SN 2013fs
| Spectral class | IIP (was IIN )[1] |
|---|---|
| Observation | |
| Date | October 6, 2013 |
| Location | |
| 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 |
| Characteristics | |
| Progenitor | Unknown |
| Progenitor type | Red Supergiant[2] |
| Notable features | Earliest detailed observations of s supernova ever made. |
| Energetics | |
| See also | |
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 approx. 3 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 6 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, probably around 10 times the mass of our 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 our sun, and its outer fringe was about 5 times the distance of Neptune from our sun.[2]
References
- ↑ "Bright Supernovae 2013". Rochester Astronomy. Retrieved 15 February 2017.
- 1 2 3 4 5 Perkins, Sid. "Exploding Star Yields its Secrets". Science. AAAS. Retrieved 15 February 2017.
- 1 2 Yaron, O.; Perley, D. A.; Gal-Yam, A.; Groh, J. H.; Horesh, A.; Ofek, E. O.; Kulkarni, S. R.; Sollerman, J.; Fransson, C.; Rubin, A.; Szabo, P.; Sapir, N.; Taddia, F.; Cenko, S. B.; Valenti, S.; Arcavi, I.; Howell, D. A.; Kasliwal, M. M.; Vreeswijk, P. M.; Khazov, D.; Fox, O. D.; Cao, Y.; Gnat, O.; Kelly, P. L.; Nugent, P. E.; Filippenko, A. V.; Laher, R. R.; Wozniak, P. R.; Lee, W. H.; et al. (2017). "Confined dense circumstellar material surrounding a regular type II supernova". Nature Physics. doi:10.1038/nphys4025.