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Author:
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Contreras, Carlos; Hamuy, Mario; Phillips, M. M.; Folatelli, Gastón; Suntzeff, Nicholas B.; Persson, S. E.; Stritzinger, Maximilian; Boldt, Luis; González, Sergio; Krzeminski, Wojtek; Morrell, Nidia; Roth, Miguel; Salgado, Francisco; Maureira, María José; Burns, Christopher R.; Freedman, Wendy L.; Madore, Barry F.; Murphy, David; Wyatt, Pamela; Li, Weidong; Filippenko, Alexei V.
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Abstract:
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The Carnegie Supernova Project is a five-year survey being carried out at the Las Cam-
panas Observatory to obtain high-quality light curves of 100 low-redshift Type Ia
supernovae in a well-defined photometric system. Here we present the first release of
photometric data that contains the optical light curves of 35 Type Ia supernovae, and
near-infrared light curves for a subset of 25 events. The data comprise 5559 optical
(ugriBV ) and 1043 near-infrared (Y JHKs) data points in the natural system of the
Swope telescope. Twenty-eight supernovae have pre-maximum data, and for 15 of these,
the observations begin at least 5 days before B maximum. This is one of the most ac-
curate datasets of low-redshift Type Ia supernovae published to date. When completed,
the CSP dataset will constitute a fundamental reference for precise determinations of
cosmological parameters, and serve as a rich resource for comparison with models of
Type Ia supernovae. |