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Using Quantitative Spectroscopic Analysis to Determine the Properties and Distances of Type II-Plateau Supernovae: SNe 2005cs and 2006bp
Luc Dessart, Stephane Blondin, Peter J. Brown +8
We analyze the Type II Plateau supernovae (SN II-P) 2005cs and 2006bp with the non-LTE model atmosphere code CMFGEN. We fit 13 spectra in the first month for SN 2005cs and 18 for S…
Type Ia Supernovae are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL
W. Michael Wood-Vasey, Andrew S. Friedman, Joshua S. Bloom +11
We have obtained 1087 NIR (JHKs) measurements of 21 SNe Ia using PAIRITEL, nearly doubling the number of well-sampled NIR SN Ia light curves. These data strengthen the evidence tha…
Constraining Cosmic Evolution of Type Ia Supernovae
Ryan J. Foley, A. V. Filippenko, C. Aguilera +27
We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSE…
Determining the Type, Redshift, and Age of a Supernova Spectrum
Stéphane Blondin, John L. Tonry
We present an algorithm to identify the type of an SN spectrum and to determine its redshift and age. This algorithm, based on the correlation techniques of Tonry & Davis, is imple…
Towards More Precise Survey Photometry for PanSTARRS and LSST: Measuring Directly the Optical Transmission Spectrum of the Atmosphere
Christopher W. Stubbs, F. William High, Matthew R. George +7
Motivated by the recognition that variation in the optical transmission of the atmosphere is probably the main limitation to the precision of ground-based CCD measurements of celes…
The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry
G. Miknaitis, G. Pignata, A. Rest +33
We describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the equation of state parameter of the dark energy. We present…