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Spectroscopy of the Type Ia supernova 2011fe past 1000 days
S. Taubenberger, N. Elias-Rosa, W. E. Kerzendorf +11
In this letter we present an optical spectrum of SN 2011fe taken 1034 d after the explosion, several hundred days later than any other spectrum of a Type Ia supernova (disregarding…
The white dwarf's carbon fraction as a secondary parameter of Type Ia supernovae
Sebastian T. Ohlmann, Markus Kromer, Michael Fink +4
Binary stellar evolution calculations predict that Chandrasekhar-mass carbon/oxygen white dwarfs (WDs) show a radially varying profile for the composition with a carbon depleted co…
Very late photometry of SN 2011fe
W. E. Kerzendorf, S. Taubenberger, I. R. Seitenzahl +1
The Type Ia supernova SN 2011fe is one of the closest supernovae of the past decades. Due to its proximity and low dust extinction, this object provides a very rare opportunity to…
Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
M. Fink, F. K. Roepke, W. Hillebrandt +3
The explosion of sub-Chandrasekhar mass white dwarfs via the double detonation scenario is a potential explanation for type Ia supernovae. In this scenario, a surface detonation in…