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OATS-DAUT SEMINAR
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Speaker:
Abouazza Elmhamdi (INAF-OATS - Trieste)
Title:
Understanding spectra of Core Collapse Supernovae
Date: Wednesday, June 28th, 2006
Time: 12:00 noon
Venue: Villa Bazzoni
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Abstract: In this talk I will focus on the spectroscopic
properties of a selected optical photospheric spectra of core collapse
supernovae (CCSNe). The investigation is made through Synthetic
Spectra analysis. Special attention is devoted to traces of Hydrogen
and Helium at early phases. Differences in the way Hydrogen manifests
its presence within CCSNe are highlighted. Rough estimates of ejecta
and Hydrogen masses are given. A low mass and thin hydrogen layer with
very high ejection velocities above the helium shell, is found to be
the most likely scenario for Type Ib SNe. Some interesting and curious
issues relating to oxygen lines suggest future investigations.
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