The nature of S Andromedae (SN 1885A)

Details The nature of S Andromedae (SN 1885A) The nature of S Andromedae (SN 1885A)

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331l.109c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 331, Aug. 15, 1988, p. L109-L112.

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18

Andromeda Galaxy, Astronomical Spectroscopy, Stellar Evolution, Supernovae, Line Spectra, Nickel Isotopes, Stellar Mass, Supernova Remnants, White Dwarf Stars

Scientific paper

The available data on SN 1885A in M31 indicate that it was a Type I supernova, but that its light curve had a rapid rise to maximum, a rapid postmaximum decline, and a large magnitude difference between maximum and 150 days postmaximum, compared to other Type I events. The authors argue that it was a low-mass explosion, ejecting 0.1 - 0.3 M_sun; of matter, mostly in the form of 56Ni. This suggests that it left a compact remnant, either a neutron star or a white dwarf. A model by Woosley, Taam, and Weaver involving He detonation on the surface of a white dwarf gives an excellent fit to the observed light curve.

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