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A spectropolarimetric view on the nature of the peculiar Type I SN 2005hk
J. R. Maund, J. C. Wheeler, L. Wang +6
We report two spectropolarimetric observations of SN 2005hk, which is a close copy of the "very peculiar" SN 2002cx, showing low peak luminosity, slow decline, high ionization near…
The Unification of Asymmetry Signatures of Type Ia Supernovae
J. R. Maund, P. A. Hoeflich, F. Patat +6
We present a compilation of the geometry measures acquired using optical and IR spectroscopy and optical spectropolarimetry to probe the explosion geometry of Type Ia SNe. Polariza…
Single or Double Degenerate Progenitors? Searching for Shock Emission in the SDSS-II Type Ia Supernovae
Brian T. Hayden, Peter M. Garnavich, Daniel Kasen +10
From the set of nearly 500 spectroscopically confirmed type~Ia supernovae and around 10,000 unconfirmed candidates from SDSS-II, we select a subset of 108 confirmed SNe Ia with wel…
The Subluminous Supernova 2007qd: A Missing Link in a Family of Low-Luminosity Type Ia Supernovae
Colin M. McClelland, Peter M. Garnavich, Lluís Galbany +12
We present multi-band photometry and multi-epoch spectroscopy of the peculiar Type Ia supernova (SN Ia) 2007qd, discovered by the SDSS-II Supernova Survey. It possesses physical pr…
Aspherical Supernova Shock Breakout and the Observations of Supernova 2008D
Sean M. Couch, David Pooley, J. Craig Wheeler +1
Shock breakout is the earliest, readily-observable emission from a core-collapse supernova explosion. Observing supernova shock breakout may yield information about the nature of t…
The Exceptionally Luminous Type Ia Supernova 2007if
F. Yuan, R. M. Quimby, J. C. Wheeler +7
SN 2007if was the third over-luminous SN Ia detected after 2003fg and 2006gz. We present the photometric and spectroscopic observations of the supernova and its host by ROTSE-III,…