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Probing supernovae ejecta by Halpha damping wings

Nikolai N. Chugai

astro-pharXiv:astro-ph/9911300

Abstract

It is predicted that Hα emission line at the early nebular epoch of type II-P supernovae may display robust observational effects of damping wings. This is illustrated by Monte-Carlo simulations. The strength of damping wing effects may be used to constrain parameters of the line-emitting zone. An anomalous redshift, width and red wing of Hα revealed by SN 1997D on day 150 are explained in terms of damping wing effects.

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