SN 2007uy

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]

SN 2007uy
Event typeSupernova
Type Ib[1]
DateDecember 31, 2007[2]
ConstellationLynx
Right ascension09h 09m 35.28s[2]
Declination+33° 07′ 09.2″[2]
EpochJ2000
Galactic coordinatesl = 191.58°, b = +42.2°[2]
Distance96.2 ± 5.9 Mly (29.5 ± 1.8 Mpc)[3]
Redshift0.0065[2]
HostNGC 2770[2]
Peak apparent magnitude17.2[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
  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. 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.
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