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

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

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...

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Veröffentlicht in:arXiv.org 2018-10
Hauptverfasser: Phillips, M M, Contreras, Carlos, Hsiao, E Y, Morrell, Nidia, Burns, Christopher R, Stritzinger, Maximilian, Ashall, C, Freedman, Wendy L, Hoeflich, P, Persson, S E, Piro, Anthony L, Suntzeff, Nicholas B, Uddin, Syed A, Anais, Jorge, Baron, E, Busta, Luis, Abdo Campillay, Castellón, Sergio, Corco, Carlos, Diamond, T, Gall, Christa, Gonzalez, Consuelo, Holmbo, Simon, Krisciunas, Kevin, Roth, Miguel, Serón, Jacqueline, Taddia, F, Torres, Simón, Anderson, J P, Baltay, C, Folatelli, Gastón, Galbany, L, Goobar, A, Hadjiyska, Ellie, Hamuy, Mario, Kasliwal, Mansi, Lidman, C, Nugent, Peter E, Perlmutter, S, Rabinowitz, David, Ryder, Stuart D, Schmidt, Brian P, Shappee, B J, Walker, Emma S
Format: Artikel
Sprache:eng
Schlagworte:
Cosmology
Hubble diagram
Infrared photometry
Infrared spectra
Infrared spectroscopy
Light curve
Near infrared radiation
Photometry
Supernovae
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Beschreibung
Zusammenfassung: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.
ISSN:2331-8422