Carbon Signatures in Type Ia Supernovae Spectra

Details Carbon Signatures in Type Ia Supernovae Spectra Carbon Signatures in Type Ia Supernovae Spectra

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543017p&link_type=abstract

American Astronomical Society, AAS Meeting #215, #430.17; Bulletin of the American Astronomical Society, Vol. 42, p.359

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Scientific paper

A major difference between various explosion scenarios of Type Ia supernovae (SNe Ia) is the remaining amount of unburned (C + O) material and its velocity distribution within the expanding ejecta. We have investigated the presence of C II 6580 A in SNe Ia using the parameterized spectrum synthesis code, SYNOW, and optical spectra obtained from the publicly available database, SuSpect. While oxygen absorption features are not uncommon in SN Ia spectra, the presence of strong carbon absorption has only been confirmed in a handful of objects. The infrequent identification of carbon lines may be due to a weak absorption signature, line blending with Si II 6355 A absorption, or a combination of these and other possible effects. We will present SYNOW spectra fits for several SNe Ia.

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