Type I supernovae in the infrared and their use as distance indicators.
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1985
- DOI:
- 10.1086/163456
- Bibcode:
- 1985ApJ...296..379E
- Keywords:
-
- Astrometry;
- Distance;
- Infrared Spectra;
- Stellar Spectrophotometry;
- Supernovae;
- Absorption Spectra;
- Cosmology;
- Galactic Structure;
- Light Curve;
- Stellar Color;
- Stellar Magnitude;
- Astrophysics