SN 2213-1745

SN 2213-1745
Observation data (Epoch J2000.0)
Supernova type	SLNS-R
Right ascension	22^h 13^m 39.97^s
Declination	−17° 45' 24.49
Discovery date	Supernova Legacy Survey
Distance	z=2.0458 ± 0.0005
Physical characteristics
Progenitor	~ 250 M☉ star

SN 2213-1745 was an extremely remote superluminous supernova (SLSN), which occurred in between November 2004 and June 2005. Its peak far-ultraviolet absolute magnitude reached −21.2, which was comparable to the total absolute magnitude of its host galaxy. The distance (redshift) to this supernova z=2.0458 ± 0.0005 makes it one of the most remote supernova observed as of 2012. The luminosity of SN 2213-1745 evolved slowly over several years as it was still detectable in November 2006. Both the high luminosity and slow decay indicate that the supernova's progenitor was a star with an initial mass as high as 250 solar masses. The supernova explosion itself was likely a pair-instability supernova similar to the SN 2007bi event, with which it shares many similarities.^[1]

References

1. Cooke, J.; Sullivan, M.; Gal-Yam, A.; Barton, E. J.; Carlberg, R. G.; Ryan-Weber, E. V.; Horst, C.; Omori, Y.; Díaz, C. G. (2012). "Superluminous supernovae at redshifts of 2.05 and 3.90". Nature 491 (7423): 228–231. arXiv:1211.2003. Bibcode:2012Natur.491..228C. doi:10.1038/nature11521. PMID 23123848.

External links

• 12 Billion-Year Old Supernova Discovered by Astronomers
• Elemental origins glimpsed in 12 billion year old supernova