CfAIR2: NEAR-INFRARED LIGHT CURVES OF 94 TYPE Ia SUPERNOVAE
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Friedman-2015-CFAIR2_ NEAR-INFRARE.pdf
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Author(s)
Wood-Vasey, W. M.
Marion, G. Howie
Challis, Peter
Mandel, Kaisey S.
Bloom, Joshua S.
Modjaz, Maryam
Narayan, Gautham
Hicken, Malcolm
Foley, Ryan J.
Klein, Christopher R.
Date Issued
September 2015
Journal
The Astrophysical Journal Supplement Series
Citation
Friedman, Andrew S., W. M. Wood-Vasey, G. H. Marion, Peter Challis, Kaisey S. Mandel, Joshua S. Bloom, Maryam Modjaz, et al. “CfAIR2: NEAR-INFRARED LIGHT CURVES OF 94 TYPE Ia SUPERNOVAE.” The Astrophysical Journal Supplement Series 220, no. 1 (September 4, 2015): 9. © 2015 The American Astronomical Society
Version
Final published version
Abstract
CfAIR2 is a large, homogeneously reduced set of near-infrared (NIR) light curves (LCs) for Type Ia supernovae (SNe Ia) obtained with the 1.3 m Peters Automated InfraRed Imaging TELescope. This data set includes 4637 measurements of 94 SNe Ia and 4 additional SNe Iax observed from 2005 to 2011 at the Fred Lawrence Whipple Observatory on Mount Hopkins, Arizona. CfAIR2 includes JHK[subscript s] photometric measurements for 88 normal and 6 spectroscopically peculiar SN Ia in the nearby universe, with a median redshift of z ~ 0.021 for the normal SN Ia. CfAIR2 data span the range from −13 days to +127 days from B-band maximum. More than half of the LCs begin before the time of maximum, and the coverage typically contains ~13–18 epochs of observation, depending on the filter. We present extensive tests that verify the fidelity of the CfAIR2 data pipeline, including comparison to the excellent data of the Carnegie Supernova Project. CfAIR2 contributes to a firm local anchor for SN cosmology studies in the NIR. Because SN Ia are more nearly standard candles in the NIR and are less vulnerable to the vexing problems of extinction by dust, CfAIR2 will help the SN cosmology community develop more precise and accurate extragalactic distance probes to improve our knowledge of cosmological parameters, including dark energy and its potential time variation.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Program in Science, Technology and Society
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DOI of Published Version
https://doi.org/10.1088/0067-0049/220/1/9
