SN 2005bc

SN 2005bc
SN 2005bc just over a week after peak brightness
Event typeSupernova
Type Ia[1]
Datec. 129.3 million years ago
(detected 2 April 2005 by Tim Puckett and L. Cox[1])
ConstellationBoötes
Right ascension14h 37m 14.78s[1]
Declination+38° 27′ 23.1″[1]
EpochJ2000.0
Galactic coordinatesLong 66.76°
Lat 65.17°
Distance129.3 Mly (39.63 Mpc)[2]
Redshift0.0132, 0.0122 Edit this on Wikidata
HostNGC 5698[1]
Progenitor typewhite dwarf
Peak apparent magnitude+16.6[1]
Other designationsSN 2005bc
[edit on Wikidata]

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.

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

  1. ^ a b c d e f g h Barbon, R.; et al. (2008), "Asiago Supernova Catalogue", CDS/ADC Collection of Electronic Catalogues, vol. 1, Bibcode:2008yCat....1.2024B.
  2. ^ a b 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, S2CID 250737862, 50.
  3. ^ a b 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): 1, Bibcode:2005CBET..132....1M.
  4. ^ Burket, J.; et al. (April 2005), Green, D. W. E. (ed.), "Supernovae 2005az, 2005bb, and 2005bc", IAU Circular, 8504 (2): 2, Bibcode:2005IAUC.8504....2B.
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