# Astronomy:SN 1000+0216

Spectral class The pair instability process that triggered the explosion in SN 1000+0216 SLNS-R or SLNS-II ? Supernova Legacy Survey Sextans 10h 00m 05.8720s[1] +02° 16′ 23.621″[1] J2000.0 z=3.8993 ± 0.0074 initially a 140–250 M☉ star

SN 1000+0216 was an extremely remote superluminous supernova (SLSN), which occurred in between June and November 2006 in the constellation Sextans. Its peak far-ultraviolet absolute magnitude reached −21.5, which exceeded the total absolute magnitude of its host galaxy. The distance (redshift) to this supernova z=3.8993 ± 0.0074 makes it the most distant supernova observed as of 2012. The luminosity of SN 1000+0216 evolved slowly over several years as it was still detectable in November 2008. Both the high luminosity and slow decay indicate that the supernova's progenitor was a very massive star. The supernova explosion itself was likely either a pair-instability supernova or a pulsational pair-instability supernova similar to the SN 2007bi event. It also had some similarities to the low redshift SN 2006gy supernova. Overall classification of SN 1000+0216 remains uncertain.[2]

## References

1. Cooke, J.; Sullivan, M.; Gal-Yam, A.; Barton, E. J.; Carlberg, R. G.; Ryan-Weber, E. V.; Horst, C.; Omori, Y. et al. (2012). "Superluminous supernovae at redshifts of 2.05 and 3.90". Nature 491 (7423): 228–231. doi:10.1038/nature11521. PMID 23123848. Bibcode2012Natur.491..228C.