Carnegie Supernova Project-II: Extending the Near-infrared Hubble Diagram for Type Ia Supernovae to z ∼ 0.1
Oct 18, 201823 pages
Published in:
- Publ.Astron.Soc.Pac. 131 (2018) 995, 014001
- Published: Nov 27, 2018
e-Print:
- 1810.09252 [astro-ph.HE]
DOI:
- 10.1088/1538-3873/aae8bd (publication)
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Abstract: (IOP)
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 (0.03 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.Note:
- 43 pages, 10 figures, accepted for publication in PASP
- cosmology: observations
- galaxies: distances and redshifts
- (stars:)supernovae: general
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