Carnegie Supernova Project-II: Extending the Near-Infrared Hubble
  Diagram for Type Ia Supernovae to $z\sim0.1$

Anais, Jorge; Anderson, J. P.; Ashall, C.; Baltay, C.; Baron, E.; Burns, Christopher R.; Busta, Luis; Campillay, Abdo; Castellón, Sergio; Contreras, Carlos; Corco, Carlos; Diamond, T.; Folatelli, Gastón; Freedman, Wendy L.; Galbany, L.; Gall, Christa; Gonzalez, Consuelo; Goobar, A.; Hadjiyska, Ellie; Hamuy, Mario; Hoeflich, P.; Holmbo, Simon; Hsiao, E. Y.; Kasliwal, Mansi; Krisciunas, Kevin; Lidman, C.; Morrell, Nidia; Nugent, Peter E.; Perlmutter, S.; Persson, S. E.; Phillips, M. M.; Piro, Anthony L.; Rabinowitz, David; Roth, Miguel; Ryder, Stuart D.; Schmidt, Brian P.; Serón, Jacqueline; Shappee, B. J.; Stritzinger, Maximilian; Suntzeff, Nicholas B.; Taddia, F.; Torres, Simón; Uddin, Syed A.; Walker, Emma S.

research

Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to $z\sim0.1$

Abstract

The Carnegie Supernova Project-II (CSP-II) was an NSF-funded, four-year program to obtain optical and near-infrared observations of a "Cosmology" sample of

\sim100

Type Ia supernovae located in the smooth Hubble flow (

0.03 \lesssim z \lesssim 0.10

). Light curves were also obtained of a "Physics" sample composed of 90 nearby Type Ia supernovae at

z \leq 0.04

selected for near-infrared spectroscopic time-series observations. The primary emphasis of the CSP-II is to use the combination of optical and near-infrared photometry to achieve a distance precision of better than 5%. In this paper, details of the supernova sample, the observational strategy, and the characteristics of the photometric data are provided. In a companion paper, the near-infrared spectroscopy component of the project is presented.Comment: 43 pages, 10 figures, accepted for publication in PAS