SN 2005cs

SN 2005cs
Event typeSupernova
Type IIp[1]
Datec. 27.4 million years ago
(discovered 28 June 2005 by Wolfgang Kloehr)
ConstellationCanes Venatici
Right ascension13h 29m 53.37s[2]
Declination+47° 10′ 28.2″[2]
EpochJ2000
Distance27.4 ± 2.3 Mly (8.4 ± 0.7 Mpc)[3]
HostWhirlpool Galaxy[3]
Progenitor7–13 M☉[4]
Progenitor typeRed Supergiant[3]
Colour (B-V)0.14 ±0.02
Peak apparent magnitude14.5[1]
Other designationsSN 2005cs
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SN 2005cs was a supernova in the spiral galaxy M51,[3] known as the Whirlpool Galaxy. It was a type II-P core-collapse supernova, discovered June 28, 2005 by Wolfgang Kloehr, a German amateur astronomer.[5] The event was positioned at an offset of 15″ west and 78″ south of the galactic nucleus of M51.[2] Based on the data, the explosion was inferred to occur 2.8 days before discovery.[6] It was considered under-luminous for a supernova of its type, releasing an estimated 3×1050 erg in energy.[4]

The progenitor star was identified from a Hubble Space Telescope image taken January 20–21, 2005. It was a red supergiant with a spectral type in the mid-K to late-M type range and an estimated initial (ZAMS) mass of 9+3
−2 M☉. A higher mass star enshrouded in a cocoon of dust has been ruled out.[7]

References

  1. ^ a b Barbon, R.; et al. (2008). "Asiago Supernova Catalogue". CDS/ADC Collection of Electronic Catalogues. 1. Bibcode:2008yCat....1.2024B.
  2. ^ a b c Kloehr, W.; et al. (June 2005). "Supernova 2005cs in M51". IAU Circular. 8553 (1): 1. Bibcode:2005IAUC.8553....1K.
  3. ^ a b c d Vinkó, J.; et al. (April 2012). "Improved distance determination to M 51 from supernovae 2011dh and 2005cs". Astronomy & Astrophysics. 540: 7. arXiv:1111.0596. Bibcode:2012A&A...540A..93V. doi:10.1051/0004-6361/201118364. S2CID 118397568. A93.
  4. ^ a b Pastorello, A.; et al. (April 2009). "SN 2005cs in M51 - II. Complete evolution in the optical and the near-infrared". Monthly Notices of the Royal Astronomical Society. 394 (4): 2266–2282. arXiv:0901.2075. Bibcode:2009MNRAS.394.2266P. doi:10.1111/j.1365-2966.2009.14505.x. S2CID 119105961.
  5. ^ Bishop, David (August 8, 2014). "Supernova 2005cs in M51". Rochester Academy of Science. Retrieved November 18, 2015.
  6. ^ Dessart, Luc; et al. (March 2008). "Using Quantitative Spectroscopic Analysis to Determine the Properties and Distances of Type II Plateau Supernovae: SN 2005cs and SN 2006bp". The Astrophysical Journal. 675 (1): 644–669. arXiv:0711.1815. Bibcode:2008ApJ...675..644D. doi:10.1086/526451. S2CID 15742356.
  7. ^ Maund, Justyn R.; et al. (November 2005). "The progenitor of SN 2005cs in the Whirlpool Galaxy". Monthly Notices of the Royal Astronomical Society: Letters. 364 (1): L33–L37. arXiv:astro-ph/0507502. Bibcode:2005MNRAS.364L..33M. doi:10.1111/j.1745-3933.2005.00100.x. S2CID 119053178.