Spectroscopic differences among type IA SNe and their use as standard candles.
Abstract
To date, type Ia supernovae have been considered useful standard candles in virtue of their small scatter in magnitudes and colors among different events at maximum. It is presently noted that it is important to adequately model the atmosphere from premaximum up to nebular phases for every type Ia event, to determine how much Ni-56 has been synthesized in the supernova explosion. Methods for determining the luminosity at maximum, and in nebular phases, should accordingly be developed to be independent of the 'standard candle' hypothesis.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 1992
- Bibcode:
- 1992MmSAI..63..243R
- Keywords:
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- Astronomical Spectroscopy;
- Supernovae;
- Light Curve;
- Metallicity;
- Stellar Composition;
- Stellar Spectra;
- Astrophysics