Type IA supernovae in Lyon groups of galaxies

Details Type IA supernovae in Lyon groups of galaxies Type IA supernovae in Lyon groups of galaxies

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..170r&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 106, no. 696, p. 170-172

Astronomy and Astrophysics

Astronomy

7

Astronomical Catalogs, Astronomical Photometry, Galactic Clusters, Stellar Magnitude, Supernovae, Astrometry, Cepheid Variables, Doppler Effect, Hubble Constant, Peculiar Stars, Virgo Galactic Cluster

Scientific paper

Two galaxies with observed type Ia supernovae have been identified in each of three Lyon groups of galaxies not associated with the Virgo cluster. The difference of well-determined apparent magnitudes at light-curve maximum of the supernovae in each group is delta B less than or equal to 0.2 mag. delta V less than or equal to 0.2 mag. Previously, Branch and Tammann found that the observed apparent magnitudes at maximum light for type Ia supernovae in three galaxies, each with two observed supernovae, are nearly identical. The consistency of these two independent results further suggests that the set of all type Ia supernovae contains a large subset of 'standard candles.'

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