SN 2213-1745 was an extremely remote
superluminous supernova
A super-luminous supernova (SLSN, plural super luminous supernovae or SLSNe) is a type of stellar explosion with a luminosity 10 or more times higher than that of standard supernovae. Like supernovae, SLSNe seem to be produced by several mech ...
(SLSN), which occurred in between November 2004 and June 2005. Its peak
far-ultraviolet
Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nanometer, nm (with a corresponding frequency around 30 Hertz, PHz) to 400 nm (750 Hertz, THz), shorter than that of visible light, but longer than ...
absolute magnitude reached −21.2, which was comparable to the total absolute magnitude of its host galaxy. The distance (
redshift
In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). The opposite change, a decrease in wavelength and simultaneous increase in f ...
) to this supernova 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
SN 2007bi was an extremely energetic supernova discovered early in 2007 by the international Nearby Supernova Factory based at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. The precursor star is estimated to have had 200 ...
event, with which it shares many similarities.
References
External links
Light curves and spectra on th
Open Supernova Catalog12 Billion-Year Old Supernova Discovered by AstronomersElemental origins glimpsed in 12 billion year old supernova
Supernovae
Astronomical objects discovered in 2005
Aquarius (constellation)
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