The Peculiar Type II SN1987B in NGC 5850

Details The Peculiar Type II SN1987B in NGC 5850 The Peculiar Type II SN1987B in NGC 5850

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111.2038s&link_type=abstract

Astronomical Journal v.111, p.2038

Astronomy and Astrophysics

Astronomy

10

Supernovae: General, Stars: Fundamental Parameters

Scientific paper

Nine photometric and five spectroscopic observations of the peculiar Type II supernova SN1987B in NGC 5850 are presented. The light curve is different from any of the typical supernova light curves. The light curve falls as slowly as a Type IIP light curve for ~50 days, then steepens considerably, in contrast to the spectroscopically similar object SN1988Z. Both SN1987B and SN1988Z have been considered as representative of "Type IIn" supernovae, those supernovae that show circumstellar signatures in their spectra. The spectra of SN1987B show weak hydrogen emission lines with a narrow core (FWZI ~ 1000 km s^-1^) and weak, low- contrast emission lines of hydrogen with a FWZI of ~8000 km s^-1^. Both photometric and spectroscopic evidence suggests SN1987B had a low-mass envelope.

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