Type I supernovae in the infrared and their use as distance indicators

Details Type I supernovae in the infrared and their use as distance indicators Type I supernovae in the infrared and their use as distance indicators

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..379e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 15, 1985, p. 379-389.

Other

158

Astrometry, Distance, Infrared Spectra, Stellar Spectrophotometry, Supernovae, Absorption Spectra, Cosmology, Galactic Structure, Light Curve, Stellar Color, Stellar Magnitude

Scientific paper

New infrared data for 11 Type I supernovae are presented. These results, when combined with other published data for Type I supernovae, show that the light curves fall into two well-defined groups. The first more common type - Type Ia - shows strong, variable, unexplained absorption at 1.2 μm and probably at 3.5 μm, while the second type - Type Ib - shows no such absorption and a slower decline after maximum. The light curves of the Type Ia supernovae appear to have a dispersion in color and absolute magnitude of ±0.2 mag or less, making them potentially valuable for distance determination within the Local Supercluster.

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