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SN 2010lp-a Type Ia Supernova from a Violent Merger of Two Carbon-Oxygen White Dwarfs

Kromer, M; Pakmor, R; Taubenberger, Stefano; Pignata, G.; Fink, M; Ropke, Friedrich; Seitenzahl, Ivo; Sim, Stuart; Hillebrandt, Wolfgang


SN 2010lp is a subluminous Type Ia supernova (SN Ia) with slowly evolving lightcurves. Moreover, it is the only subluminous SN Ia observed so far that shows narrow emission lines of [O i] in late-time spectra, indicating unburned oxygen close to the center of the ejecta. Most explosion models for SNe Ia cannot explain the narrow [O i] emission. Here, we present hydrodynamic explosion and radiative transfer calculations showing that the violent merger of two carbon–oxygen white dwarfs of 0.9...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.1088/2041-8205/778/1/L18
Access Rights: Open Access


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