SN 2007uy was a supernova that occurred in the spiral galaxy NGC 2770. It was discovered by Yoji Hirose on December 31, 2007 from Chigasaki city in Japan,[4] approximately four days after the explosion.[3] The position of the supernova was offset 20.6″ east and 15.5″ south of the galaxy's nucleus,[2] near a star-forming region.[5] It was identified as a Type Ib supernova from its spectrum a week before reaching maximum, and appeared the most similar to SN 2004gq.[1]
| Event type | Supernova |
|---|---|
| Type Ib[1] | |
| Date | December 31, 2007[2] |
| Constellation | Lynx |
| Right ascension | 09h 09m 35.28s[2] |
| Declination | +33° 07′ 09.2″[2] |
| Epoch | J2000 |
| Galactic coordinates | l = 191.58°, b = +42.2°[2] |
| Distance | 96.2 ± 5.9 Mly (29.5 ± 1.8 Mpc)[3] |
| Redshift | 0.0065[2] |
| Host | NGC 2770[2] |
| Peak apparent magnitude | 17.2[2] |
| Total energy output | ~1.5×1051 erg[3] |
Emissions from SN 2007uy were detected from the X-ray to the radio band.[6] The light from this event was heavily reddened due to intervening dust in the host galaxy. This energetic explosion released ~1.5×1051 erg in energy and ejected a mass of 4.4 M☉.[3] The progenitor was likely a massive star that had been stripped of its hydrogen envelope by a binary companion.[5] There is no radio evidence of a relativistic jet of the type that would be associated with a gamma-ray burst.[6]
While interesting in its own right, SN 2007uy was overshadowed by SN 2008D, a supernova whose burst was observed serendipitously while SN 2007uy was being studied by Swift, something unprecedented in astronomy.[7] This second supernova occurred within ten days of the first.[6]
References
edit- ^ a b Blondin, S.; Calkins, M. (January 2008). Green, D. W. E. (ed.). "Supernova 2007uy in NGC 2770". Central Bureau Electronic Telegrams. 1191 (2): 2. Bibcode:2008CBET.1191....2B.
- ^ a b c d e f g h Barbon, R.; et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. 1. Bibcode:2008yCat....1.2024B.
- ^ a b c d Roy, Rupak; et al. (September 2013). "SN 2007uy - metamorphosis of an aspheric Type Ib explosion". Monthly Notices of the Royal Astronomical Society. 434 (3): 2032–2050. arXiv:1306.5389. Bibcode:2013MNRAS.434.2032R. doi:10.1093/mnras/stt1148.
- ^ Nakano, S.; et al. (January 2008). Green, D. W. E. (ed.). "Supernova 2007uy in NGC 2770". IAU Circular. 8908 (2): 2. Bibcode:2008IAUC.8908....2N.
- ^ a b Thöne, C. C.; et al. (February 2015). The beauty of resolution: The SN Ib factory NGC 2770 spatially resolved. Galaxies in 3D across the Universe, Proceedings of the International Astronomical Union, IAU Symposium. Vol. 309. p. 169-170. Bibcode:2015IAUS..309..169T. doi:10.1017/S1743921314009594.
- ^ a b c van der Horst, A. J.; et al. (January 2011). "Detailed Radio View on Two Stellar Explosions and Their Host Galaxy: XRF 080109/SN 2008D and SN 2007uy in NGC 2770". The Astrophysical Journal. 726 (2): 12. arXiv:1011.2521. Bibcode:2011ApJ...726...99V. doi:10.1088/0004-637X/726/2/99. S2CID 17719552. 99.
- ^ "NASA's Swift Satellite Catches First Supernova in the Act of Exploding". Goddard Space Flight Center. May 21, 2008. Retrieved 2021-12-10.
External links
edit- Light curves and spectra Archived 2017-10-23 at the Wayback Machine on the Open Supernova Catalog
- IAUC 8908 IAU Circular announcing the discovery.