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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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