Speaker
Epson Heringer
Description
Traditional techniques used to measure the delay time
distribution of SN Ia depend on physical quantities that are
notoriously difficult to measure, such as the age of the
progenitor system. In this talk I will introduce a novel
method, in which the relevant quantites are the color and
absolute magnitude of galaxies in a control sample. We
find that a power-law slope of t^-1.5 is sufficient to
explain the data - a result that is supportive of the double
degenerate scenario. We also find that if the observed SNe
Ia are separated in groups of slow and fast decliners,
the delay time of the brightest events is consistent with
the predictions of the single degenerate channel.
