The Carnegie Supernova Project I

Photometry data release of low-redshift stripped-envelope supernovae^⋆,⋆⋆

¹ Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
e-mail: max@phys.au.dk
² Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile
³ European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago, Chile
⁴ Las Cumbres Observatory, 6740 Cortona Dr., Suite 102, Goleta, CA 93117, USA
⁵ Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA
⁶ Institut für Astro- and Particle Physics, University of Innsbruck, 6020 Innsbruck, Austria
⁷ Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile
⁸ Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, B1900 FWA La Plata, Argentina
⁹ Department of Physics, Florida State University, 77 Chieftain Way, Tallahassee, FL 32306, USA
¹⁰ N. Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warszawa, Poland
¹¹ Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
¹² SOAR Telescope, Casilla 603, La Serena, Chile
¹³ Department of Astronomy & Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
¹⁴ Departamento de Astronomia, Universidad de Chile, Casilla 36D, Santiago, Chile
¹⁵ George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
¹⁶ Infrared Processing and Analysis Center, Caltech/Jet Propulsion Laboratory, Pasadena, CA 91125, USA
¹⁷ The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, 10691 Stockholm, Sweden
¹⁸ Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
¹⁹ Miller Senior Fellow, Miller Institute for Basic Research in Science, University of California, Berkeley, CA 94720, USA

Received: 22 March 2017
Accepted: 9 August 2017

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.