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Type Ia Supernovae and Supersoft X-ray Sources

Published online by Cambridge University Press:  17 January 2013

L. R. Yungelson*
Affiliation:
Institute of Astronomy, RAS, 48 Pyatnitskaja Str., 119017 Moscow, Russia email: lev.yungelson@gmail.com
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Abstract

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The rates of SNe Ia for double-degenerate and single-degenerate scenarios are computed for the models of spiral and elliptical galaxies. The number of nuclear burning white dwarfs (NBWDs) is traced. The data favors the double-degenerate scenario and suggests a lower number of NBWDs per unit mass in ellipticals. Their lower average mass is one of the reasons for the difference in the number of supersoft X-ray sources observed in the galaxies of different types.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

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