Absolute-Magnitude Distributions of Supernovae

Details Absolute-Magnitude Distributions of Supernovae Absolute-Magnitude Distributions of Supernovae

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924209j&link_type=abstract

American Astronomical Society, AAS Meeting #219, #242.09

Astronomy and Astrophysics

Astronomy

Scientific paper

The absolute-magnitude distributions of supernovae (SNe) are presented. These distributions are separated by supernova type so that we can see what absolute magnitude ranges should be expected for each type. The bulk of the data used in this study are taken from the Asiago Supernova Catalog. There are currently about 5700 supernovae in the catalog. This is nearly a three-fold increase over the last time this study was conducted. Host galaxy extinction is accounted for statistically in the distributions. The samples presented here are limited to supernovae within a radius of approximately 94 Mpc (distance modulus = 35). This helps to reduce the bias against dim supernovae. We find the mean absolute magnitudes for normal SNe Ia and SNe IIn to be brighter than MB = -19, while the mean absolute magnitudes for SNe IIb, IIL and IIP are dimmer than MB = -18.

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