Program: GN-2016A-FT-23

Title:Catching Supernovae in the Act with KEGS (Kepler Extra-Galactic Survey)
PI:Steven Margheim
Co-I(s): Ed Shaya, Brad Tucker, Peter Garnavich, Armin Rest, Richard Mushotzky, Dan Kasen, Rob Olling

Abstract

The progenitors of type Ia supernovae emain a mystery despite their importance as fundamental distance indicators. We still do not know if type Ia explosions come from single degenerate binary stars or binaries made of two white dwarfs. Recent models show that the secondary star in a single degenerate binary will cause bright shock emission in the first hours or days after the explosion while double degenerate explosions are expected to brighten monotonically. Using Kepler, we have monitors thousands of bright galaxies at z&lt,0.10 in several K2 fields. We propose to obtain late-time imaging and spectroscopy to confirm and classify several supernova candidates in these fields, for which we already have Kepler early light curves to continue to constain the physics of the early supernova explosion, and maximize our understanding of the proenitors that cause them.