UBVRIz Light Curves of 51 Type II Supernovae

Galbany, Lluís and Hamuy, Mario and Phillips, Mark M. and Suntzeff, Nicholas B. and Maza, José and Williger, Gerard (2016) UBVRIz Light Curves of 51 Type II Supernovae. ASTRONOMICAL JOURNAL, 151 (2). ISSN 0004-6256

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Abstract

We present a compilation of U BV RIz light curves of 51 type II supernovae discovered during the course of four different surveys during 1986 to 2003: the Cerro Tololo Supernova Survey, the Cal´an/Tololo Supernova Program (C&T), the Supernova Optical and Infrared Survey (SOIRS), and the Carnegie Type II Supernova Survey (CATS). The photometry is based on template-subtracted im- ages to eliminate any potential host galaxy light contamination, and calibrated from foreground stars. This work presents these photometric data, studies the color evolution using different bands, and explores the relation between the mag- nitude at maximum brightness and the brightness decline parameter (s) from maximum light through the end of the recombination phase. This parameter is found to be shallower for redder bands and appears to have the best correlation in the B band. In addition, it also correlates with the plateau duration, being thus shorter (longer) for larger (smaller) s values.

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