NOAO >   Observing Info >   Approved Programs >   2011B-0262

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Proposal Information for 2011B-0262


PI: Mark M. Phillips, Carnegie Institution of Washington, mmp@lco.cl
Address: Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Elqui, Chile

CoI: Eric Hsiao, LBL
CoI: Chris Burns, Carnegie Observatories
CoI: Wendy Freedman, Carnegie Observatories
CoI: Eric Persson, Carnegie Observatories
CoI: Maximilian Stritzinger, Stockholm Observatory
CoI: Nicholas Suntzeff, Texas A&M

Title: Near-Infrared Spectroscopic Followup of Type Ia Supernovae in the Hubble Flow

Abstract: The Carnegie Supernova Project II (CSP II) is an NSF-funded, 5-year program to obtain optical and near-IR (NIR) observations of 100-150 Type Ia supernovae (SNe Ia) located in the smooth Hubble flow (0.03 < z < 0.08). The main emphasis of the CSP II is to obtain NIR light curves in order to achieve a distance precision of 1-2%, as well as to build a definitive low-z reference for future rest infrared observations of SNe Ia at high-z with next-generation dark energy experiments such as WFIRST. A key ingredient to realizing these goals is the measurement of NIR K corrections as a function of light curve phase and shape, which to date are only poorly understood. We therefore request 100 hours of ToO time over 5 years with GNIRS on Gemini North to obtain multi-epoch NIR spectroscopy for ~25 of the SNe to be observed by the CSP II. In this first proposal, we ask for a total of 10 hours to obtain spectra at two different phases of 2-3 SNe.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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