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Early and Late-Time Observations of SN 2008ha: Additional Constraints for the Progenitor and Explosion
Ryan J. Foley, Peter J. Brown, Armin Rest +3
We present a new maximum-light optical spectrum of the the extremely low luminosity and exceptionally low energy Type Ia supernova (SN Ia) 2008ha, obtained one week before the earl…
Pushing the Boundaries of Conventional Core-Collapse Supernovae: The Extremely Energetic Supernova SN 2003ma
A. Rest, R. J. Foley, S. Gezari +34
We report the discovery of a supernova (SN) with the highest apparent energy output to date and conclude that it represents an extreme example of the Type IIn subclass. The SN, whi…
Optical Cross Correlation Filters: An Economical Approach for Identifying SNe Ia and Estimating their Redshifts
D. M. Scolnic, A. G. Riess, M. E. Huber +3
Large photometric surveys of transient phenomena, such as Pan-STARRS and LSST, will locate thousands to millions of type Ia supernova candidates per year, a rate prohibitive for ac…
Variable Stars in the Fornax dSph Galaxy. III. The Globular Cluster Fornax 5
Claudia Greco, Gisella Clementini, Marcio Catelan +8
We present a new study of the variable star population in globular cluster 5 of the Fornax dwarf spheroidal galaxy, based on B and V time series photometry obtained with the MagIC…
Stellar Locus Regression: Accurate Color Calibration, and the Real-time Determination of Galaxy Cluster Photometric Redshifts
F. William High, Christopher W. Stubbs, Armin Rest +2
We present Stellar Locus Regression (SLR), a method of directly adjusting the instrumental broadband optical colors of stars to bring them into accord with a universal stellar colo…
Type Ia supernova science 2010-2020
D. A. Howell, A. Conley, M. Della Valle +47
In the next decade Type Ia supernovae (SNe Ia) will be used to test theories predicting changes in the Dark Energy equation of state with time. Ultimately this requires a dedicated…