The first phase of the Carnegie Supernova Project (CSP-I) was a dedicated supernova follow-up program based at the Las Campanas Observatory that collected science data of young, low-redshift supernovae between 2004 and 2009. Presented in this paper is the CSP-I photometric data release of low-redshift stripped-envelope core-collapse supernovae. The data consist of optical (uBgVri) photometry of 34 objects, with a subset of 26 having near-infrared (YJH) photometry. Twenty objects have optical pre-maximum coverage with a subset of 12 beginning at least five days prior to the epoch of B-band maximum brightness. In the near-infrared, 17 objects have pre-maximum observations with a subset of 14 beginning at least five days prior to the epoch of J-band maximum brightness. Analysis of this photometric data release is presented in companion papers focusing on techniques to estimate host-galaxy extinction (Stritzinger et al., submitted) and the light-curve and progenitor star properties of the sample (Taddia et al., submitted). The analysis of an accompanying visual-wavelength spectroscopy sample of ~150 spectra will be the subject of a future paper.
@article{arxiv.1707.07616,
title = {The Carnegie Supernova Project I: photometry data release of low-redshift stripped-envelope supernovae},
author = {M. D. Stritzinger and J. P. Anderson and C. Contreras and E. Heinrich-Josties and N. Morrell and M. M. Phillips and J. Anais and L. Boldt and L. Busta and C. R. Burns and A. Campillay and C. Corco and S. Castellon and G. Folatelli and C. González and S. Holmbo and E. Y. Hsiao and W. Krzeminski and F. Salgado and J. Serón and S. Torres-Robledo and W. L. Freedman and M. Hamuy and K. Krisciunas and B. F. Madore and S. E. Persson and M. Roth and N. B. Suntzeff and F. Taddia and W. Li and A. V. Filippenko},
journal= {arXiv preprint arXiv:1707.07616},
year = {2018}
}