SN 2007uy was a supernova that occurred in the spiral galaxyNGC 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 ~1.5×1051erg 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]
^ abBlondin, 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.
^ abcdefghBarbon, R.; et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. Bibcode:2008yCat....1.2024B.
^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.
^ abThöne, 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.
