Late Light Curves of Subluminous Type Ia Supernovae

Details Late Light Curves of Subluminous Type Ia Supernovae Late Light Curves of Subluminous Type Ia Supernovae

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343811c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #438.11; Bulletin of the American Astronomical Society, Vol. 41, p.312

Astronomy and Astrophysics

Astronomy

Scientific paper

The late light curves of Type Ia supernovae (SNe Ia) are powered by the deposition of positron kinetic energy into the supernova ejecta from the 56Co → 56Fe decay. Previous studies have shown by simulation that a fraction of these positrons can escape the ejecta under certain conditions and contribute to the Galactic 511 keV annihilation radiation (Chan & Lingenfelter 1993; Milne et al. 1999). A study of the late light curves of normally-luminous SNe Ia showed that the current methods for modeling the emission could not completely explain the shape of the light curves at late times (Lair et al. 2006). To further that work, we present the late light curves of subluminous SNe Ia.

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