Astronomy:SN 2007uy
| Event type | Supernova |
|---|---|
| Spectral class | 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] |
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]
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
- ↑ 1.0 1.1 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.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Barbon, R. et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. Bibcode: 2008yCat....1.2024B.
- ↑ 3.0 3.1 3.2 3.3 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. doi:10.1093/mnras/stt1148. Bibcode: 2013MNRAS.434.2032R.
- ↑ 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.
- ↑ 5.0 5.1 Thöne, C. C.; Christensen, L.; Gorosabel, J.; de Ugarte Postigo, A. (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. 309. p. 169-170. doi:10.1017/S1743921314009594. Bibcode: 2015IAUS..309..169T.
- ↑ 6.0 6.1 6.2 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. doi:10.1088/0004-637X/726/2/99. 99. Bibcode: 2011ApJ...726...99V.
- ↑ "NASA's Swift Satellite Catches First Supernova in the Act of Exploding". Goddard Space Flight Center. May 21, 2008. https://www.nasa.gov/centers/goddard/news/topstory/2008/swift_supernova.html.
External links
- Light curves and spectra on the Open Supernova Catalog
- IAUC 8908 IAU Circular announcing the discovery.
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