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SN 2005bc was a Type Ia supernova[3] occurring in the barred spiral galaxy NGC 5698,[1] located in the northern constellation of Boötes. SN 2005bc was discovered on 2 April 2005 by LOSS and independently by Tim Puckett and L. Cox.[4] It was positioned at an offset of 4.6″ east and 7.5″ north of the galactic nucleus.[1] The supernova was at magnitude 16.4 at discovery, and quickly rose to a peak magnitude of around 15.3 (in visible light) just over a week after discovery. It showed an expansion velocity of 12,000 km/s.[3] By mid-May, the supernova had faded to 17th magnitude.
 SN 2005bc in NGC 5698 just over a week after peak brightness | |
| Event type | Supernova |
|---|---|
| Type Ia[1] | |
| Date | 2 April 2005[1] |
| Constellation | Boötes |
| Right ascension | 14h 37m 14.78s[1] |
| Declination | +38° 27′ 23.1″[1] |
| Epoch | J2000.0 |
| Galactic coordinates | Long 66.76° Lat 65.17° |
| Distance | 129.3 Mly (39.63 Mpc)[2] |
| Redshift | 0.0132, 0.0122  |
| Host | NGC 5698[1] |
| Progenitor type | white dwarf |
| Peak apparent magnitude | +16.6[1] |
The host galaxy, NGC 5698, along with the supernova lie approximately 129 million light-years (~40 million parsecs) from Earth.[2] As the supernova was of Type Ia, its progenitor star was a compact white dwarf star that exceeded the Chandrasekhar limit.
References
- Barbon, R.; et al. (2008), "Asiago Supernova Catalogue", CDS/ADC Collection of Electronic Catalogues, Bibcode:2008yCat....1.2024B.
- Tully, R. Brent; et al. (August 2016), "Cosmicflows-3", The Astronomical Journal, 152 (2): 21, arXiv:1605.01765, Bibcode:2016AJ....152...50T, doi:10.3847/0004-6256/152/2/50, 50.
- Modjaz, M.; Kirshner, R.; Challis, P.; Nutzman, P. (April 2005), Green, D. W. E. (ed.), "Supernova 2005bc in NGC 5698", Central Bureau Electronic Telegrams, 132 (1), Bibcode:2005CBET..132....1M.
- Burket, J.; et al. (April 2005), Green, D. W. E. (ed.), "Supernovae 2005az, 2005bb, and 2005bc", IAU Circular, 8504 (2), Bibcode:2005IAUC.8504....2B.
External links
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SN 2005bc — сверхновая звезда типа Ia, вспыхнувшая 2 апреля 2005 года в галактике NGC 5698, которая находится в созвездии Волопас.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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