The effect of background galaxy contamination on the absolute magnitude and light curve speed class of type IA supernovae

Details The effect of background galaxy contamination on the absolute magnitude and light curve speed class of type IA supernovae The effect of background galaxy contamination on the absolute magnitude and light curve speed class of type IA supernovae

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101.1281b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, April 1991, p. 1281-1285. Robert A. Welch Foundation-supported research.

Astronomy and Astrophysics

Astronomy

28

Galactic Structure, Light Curve, Supernovae, Stellar Luminosity, Stellar Magnitude

Scientific paper

Observational data are presented in support of the hypothesis that background galaxy contamination is present in the photometric data of Ia supernovae and that this effect can account for the observed dispersion in the light curve speeds of most of Ia supernovae. The implication is that the observed dispersion in beta is artificial and that most of Ia supernovae have nearly homogeneous light curves. The result supports the notion that Ia supernovae are good standard candles.

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