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Multi-epoch high-spectral-resolution observations of neutral sodium in 14 Type Ia supernovae

Sternberg, Assaf; Gal-Yam, Avishay; Simon, Joshua D.; Patat, Ferdinando; Hillebrandt, Wolfgang; Phillips, Mark; Foley, Ryan JF; Thompson, Ian; Morrell, N; Chomiuk, L; Soderberg, A M; Yong, David

Description

One of the main questions concerning Type Ia supernovae is the nature of the binary companion of the exploding white dwarf. A major discriminant between different suggested models is the presence and physical properties of circumstellar material at the time of explosion. If present, this material will be ionized by the ultraviolet radiation of the explosion and later recombine. This ionization-recombination should manifest itself as time-variable absorption features that can be detected via...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/75001
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stu1202

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