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Exploration of groups and outliers in Gaia RVS stellar spectra with metric learning
Yarden Eilat Bloch, Dovi Poznanski, Nick L. J. Cox +4
The Gaia mission is transforming our view of the Milky Way by providing distances towards a billion stars, and much more. The third data release includes nearly a million spectra f…
Direct evidence for a supernova interacting with a large amount of hydrogen-free circumstellar material
Sagi Ben-Ami, Avishay Gal-Yam, Paolo A. Mazzali +16
We present our observations of SN 2010mb, a Type Ic SN lacking spectroscopic signatures of H and He. SN 2010mb has a slowly-declining light curve (days) that cannot be p…
The Red Supergiant Progenitor of Supernova 2012aw (PTF12bvh) in Messier 95
Schuyler D. Van Dyk, S. Bradley Cenko, Dovi Poznanski +9
We report on the direct detection and characterization of the probable red supergiant progenitor of the intermediate-luminosity Type II-Plateau (II-P) supernova (SN) 2012aw in the…
Classical Novae in Andromeda: Light Curves from the Palomar Transient Factory and GALEX
Yi Cao, Mansi M. Kasliwal, James D. Neill +10
We present optical light curves of twenty-nine novae in M31 during the 2009 and 2010 observing seasons of the Palomar Transient Factory (PTF). The dynamic and rapid cadences in PTF…
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…
PTF10ops - a subluminous, normal-width lightcurve Type Ia supernova in the middle of nowhere
Kate Maguire, Mark Sullivan, Rollin C. Thomas +26
PTF10ops is a Type Ia supernova (SN Ia), whose lightcurve and spectral properties place it outside the current SN Ia subtype classifications. Its spectra display the characteristic…