Supernova 2005cs was discovered on June 27, 2005 by German amateur astronomer Wolfgang Kloehr as it was of mag 14 and rising, 15" west and 67" S of the center of M51. Its brightness peaked on June 30, 2005 at 13.5 and then slowly decreased to about 14.5 where it stayed almost constant until October, 2005. This supernova was classified to be of type II from the analysis of its spectrum.

The progenitor star of this supernova was identified on images taken with the Hubble Space Telescope (HST) in the infrared light (Maund et.al. 2005, Li et.al. 2005).

• SN 2005cs discovery announce (IAU Circular 8553)
• SN 2005cs resources (David Bishop)
• SN 2005cs index of images etc. (David Bishop)
• SN 2005cs homepage at SNWeb
• SN 2005cs Discovery Report by Wolfgang Kloehr (also available in German)
• NED data for SN 2005cs
• SIMBAD data of SN 2005cs
• Publications on SN 2005cs (NASA ADS)
• Messier Galaxies and their Supernovae and Supernovae in Messier Catalog Galaxies pages

• Justyn R. Maund, Stephen J. Smartt and I. John Danziger, 2005. The Progenitor of SN 2005cs in the Whirlpool Galaxy. Monthly Notices of the Royal Astronomical Society: Letters, Vol. 364, No. 1, pp. L33-L37 [ ADS: 2005MNRAS.364L..33M] - [Preprint: astro-ph/0507502]
• Weidong Li, Schuyler D. Van Dyk, Alexei V. Filippenko, Jean-Charles Cuillandre, Saurabh Jha, Joshua S. Bloom, Adam G. Riess, Mario Livio, 2005. Identification of the Red Supergiant Progenitor of Supernova 2005cs: Do the Progenitors of Type-II-P Supernovae Have Low Mass? [ ADS: 2006ApJ...641.1060L] - [Preprint: astro-ph/0507394]

• SN 1994I in M51

• INT image of M51
• HST images of M51
• ISO images of M51 in the infrared light

Last Modification: February 10, 2006