SN 1985f - Death of a Wolf-Rayet star

Details SN 1985f - Death of a Wolf-Rayet star SN 1985f - Death of a Wolf-Rayet star

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302l..59b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 302, March 15, 1986, p. L59-L62. Research supported

Astronomy and Astrophysics

Astrophysics

68

Stellar Evolution, Stellar Spectra, Supernova Remnants, Wolf-Rayet Stars, Galactic Nuclei, Hydrogen Clouds, Spiral Galaxies

Scientific paper

From an analysis of the optical spectrum of SN 1985F, the authors show that the supernova ejecta contain ⪆5 M_sun; of oxygen and very little hydrogen. It is suggested that the explosion resulted from the pair instability supernova of a ≡50 M_sun; WO Wolf-Rayet star. The optical luminosity of the supernova is powered by the radioactive decay of 56Co synthesized in the explosion. From the rate of decay of the optical emission it is estimated that the explosion occurred ≡350 days before it was discovered in 1985 February. The authors suggest that some of the oxygen-rich (Cas A type) supernova remnants may also have been produced by exploding WO stars.

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