Carnegie supernova project-II: Extending the near-infrared hubble diagram for Type Ia supernovae to z∼0.1

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

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)


    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 ∼100 Type Ia supernovae located in the smooth Hubble flow (0.033 ≲ z ≲ 0.10). Light curves were also obtained of a “Physics” sample composed of 90 nearby Type Ia supernovae at z ≤ 0.04 selected for near-infrared spectroscopic timeseries 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.

    Original languageEnglish
    Article number014001
    Pages (from-to)1-23
    Number of pages23
    JournalPublications of the Astronomical Society of the Pacific
    Issue number995
    Publication statusPublished - 1 Jan 2019


    • cosmology: observations
    • galaxies: distances and redshifts
    • (stars:) supernovae: general


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