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Three New Eclipsing White-dwarf - M-dwarf Binaries Discovered in a Search for Transiting Planets Around M-dwarfs
Nicholas M. Law, Adam L. Kraus, Rachel Street +24
We present three new eclipsing white-dwarf / M-dwarf binary systems discovered during a search for transiting planets around M-dwarfs. Unlike most known eclipsing systems of this t…
Evidence for a compact Wolf-Rayet progenitor for the Type Ic supernova PTF 10vgv
A. Corsi, E. O. Ofek, A. Gal-Yam +22
We present the discovery of PTF 10vgv, a Type Ic supernova detected by the Palomar Transient Factory, using the Palomar 48-inch telescope (P48). R-band observations of the PTF 10vg…
Systematic Blueshift of Line Profiles in the Type IIn Supernova 2010jl: Evidence for Post-Shock Dust Formation?
Nathan Smith, Jeffrey M. Silverman, Alexei V. Filippenko +5
Type IIn SNe show spectral evidence for strong interaction between their blast wave and dense circumstellar material (CSM) around the progenitor star. SN2010jl was the brightest co…
The Massive Progenitor of the Possible Type II-Linear Supernova 2009hd in Messier 66
Nancy Elias-Rosa, Schuyler D. Van Dyk, Weidong Li +11
We present observations of SN2009hd in the nearby galaxy M66. This SN is one of the closest to us in recent years but heavily obscured by dust, rendering it unusually faint in the…
The Most Slowly Declining Type Ia Supernova 2001ay
Kevin Krisciunas, Weidong Li, Thomas Matheson +28
We present optical and near-infrared photometry, as well as ground-based optical spectra and Hubble Space Telescope ultraviolet spectra, of the Type Ia supernova (SN) 2001ay. At ma…
Low-Resolution Sodium D Absorption is a Bad Proxy for Extinction
Dovi Poznanski, Mohan Ganeshaligam, Jeffrey M. Silverman +1
Dust extinction is generally the least tractable systematic uncertainty in astronomy, and particularly in supernova science. Often in the past, studies have used the equivalent wid…