The 1885 supernova in the Andromeda nebulosity (continued)

Details The 1885 supernova in the Andromeda nebulosity (continued) The 1885 supernova in the Andromeda nebulosity (continued)

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lastr..99..447d&link_type=abstract

L'Astronomie (ISSN 0004-6302), vol. 99, Oct. 1985, p. 447-457. In French.

Other

Andromeda Galaxy, Color-Magnitude Diagram, Light Curve, Supernovae, Astrometry, Stellar Magnitude, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

A survey is made of historical data on the supernova event in Andromeda in August of 1885. A color curve is synthesized from comparisons made with other stars during the nearly 200 observations in the months when the event was brightest. A B-V maximum of +1.3 is estimated. The subsequent evolution of the B-V magnitude was characteristic of a Type I supernova. Current data on M 31, obscured by interstellar dust, indicates an extinction of 4 mag, which would explain a 1.3 mag color excess in that region. An examination of recent optical, radio, X-ray and astrometric data of M 31 are discussed to define future venues of study for characterizing the remnants of the event in order to confirm or disallow the event as a nova or a supernova.

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