Synthetic Spectra for Type Ia Supernovae at Early Epochs

Details Synthetic Spectra for Type Ia Supernovae at Early Epochs Synthetic Spectra for Type Ia Supernovae at Early Epochs

2004-10-28

arxiv.org/abs/astro-ph/0410703v1

Astronomy and Astrophysics

Astrophysics

To appear in "Proceedings of the IAU Colloquium 192 - Supernovae (10 Years of SN1993J)", eds. J.M. Marcaide and K.W. Weiler

Scientific paper

We present the current status of our construction of synthetic spectra for type Ia supernovae. These properly take into account the effects of NLTE and an adequate representation of line blocking and blanketing. The models are based on a sophisticated atomic database. We show that the synthetic spectrum reproduces the observed spectrum of 'normal' SN-Ia near maximum light from the UV to the near-IR. However, further improvements are necessary before truly quantitative analyses of observed SN-Ia spectra can be performed. In particular, the inner boundary condition has to be fundamentally modified. This is due to the dominance of electron scattering over true absorption processes coupled with the flat density structure in these objects

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