The Carnegie Supernova Project I. Photometry data release of low-redshift stripped-envelope supernovae

Creators: Stritzinger, M. D.; Madore, B. F.

Abstract

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 and the light-curve and progenitor star properties of the sample. The analysis of an accompanying visual-wavelength spectroscopy sample of ~150 spectra will be the subject of a future paper.

Additional Information

© 2018 ESO. Article published by EDP Sciences. Received 22 March 2017; Accepted 9 August 2017. Published online 05 February 2018. We thank the referee for their thorough review of this manuscript. This paper is dedicated to the memory of our dear colleague, Wojtek Krzeminski (1933–2017), who played an important role in the early history of Las Campanas Observatory and who, during his retirement, obtained many of the observations presented in this paper. Special thanks to the technical staff and telescope operators of Las Campanas Observatory for their professional assistance over the course of the CSP-I, and also to James Hughes for providing invaluable maintenance for our computer network. M. D. Stritzinger, C. Contreras, and E. Hsiao acknowledge support provided by the Danish Agency for Science and Technology and Innovation realized through a Sapere Aude Level 2 grant and the Instrument-center for Danish Astrophysics (IDA). M. D. Stritzinger also acknowledges support by a research grant (13261) from the VILLUM FONDEN. M. D. Stritzinger conducted part of this research at the Aspen Center for Physics, which is supported by NSF grant PHY-1066293. M. Hamuy acknowledges support provided by the Millennium Center for Supernova Science through grant P10-064-F (funded by Programa Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile). This material is based upon work supported by the US National Science Foundation (NSF) under grants AST–0306969, AST–0607438, AST–0908886, AST–1008343, AST–1211916, AST–1613426, AST–1613455, and AST–1613472. A. V. Filippenko is also grateful for financial assistance from TABASGO Foundation, the Christopher R. Redlich Fund, and the Miller Institute for Basic Research in Science. The work of Filippenko was conducted in part at the Aspen Center for Physics, which is supported by NSF grant PHY–1607611; he thanks the Center for its hospitality during the neutron stars workshop in June and July 2017. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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