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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, approximately four days after the explosion. The position of the supernova was offset 20.6″ east and 15.5″ south of the galaxy's nucleus, near a star-forming region. It was identified as a Type Ib supernova from its spectrum a week before reaching maximum, and appeared the most similar to SN 2004gq.

Emissions from SN 2007uy were detected from the X-ray to the radio band. The light from this event was heavily reddened due to intervening dust in the host galaxy. This energetic explosion released ~1.5×10 erg in energy and ejected a mass of 4.4 M_☉. The progenitor was likely a massive star that had been stripped of its hydrogen envelope by a binary companion. There is no radio evidence of a relativistic jet of the type that would be associated with a gamma-ray burst.

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. This second supernova occurred within ten days of the first.

References

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. ^ Barbon, R.; et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. 1. Bibcode:2008yCat....1.2024B.
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. arXiv:1306.5389. Bibcode:2013MNRAS.434.2032R. doi:10.1093/mnras/stt1148.
4. 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. ^ 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.
6. ^ 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.
7. "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

• Light curves and spectra Archived 2017-10-23 at the Wayback Machine on the Open Supernova Catalog Archived 2016-03-03 at the Wayback Machine
• IAUC 8908 IAU Circular announcing the discovery.

• Supernovae
• Lynx (constellation)
• Astronomical objects discovered in 2007