Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program

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DOI

  • E. Y. Hsiao, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • M. M. Phiilips, Las Campanas Observ, Carnegie Observ
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  • G. H. Marion, Univ Texas Austin, University of Texas System, University of Texas Austin, Dept Astron
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  • R. P. Kirshner, Gordon & Betty Moore Fdn
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  • N. Morrell, Las Campanas Observ, Carnegie Observ
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  • D. J. Sand, Univ Arizona, University of Arizona, Dept Astron, Univ Arizona, University of Arizona, Steward Observ
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  • C. R. Burns, Observ Carnegie Inst Sci, Carnegie Institution for Science
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  • C. Contreras, Las Campanas Observ, Carnegie Observ
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  • P. Hoeflich, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • M. D. Stritzinger
  • S. Valenti, Univ Calif Davis, University of California System, University of California Davis, Dept Phys
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  • J. P. Anderson, European So Observ, European Southern Observatory
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  • C. Ashall, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • C. Baltay, Yale Univ, Yale University, Dept Phys & Astron
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  • E. Baron, Univ Oklahoma, University of Oklahoma - Norman, University of Oklahoma System, Homer L Dodge Dept Phys & Astron
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  • D. P. K. Banerjee
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  • S. Davis, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • T. R. Diamond, NASA, National Aeronautics & Space Administration (NASA), National Institutes of Health (NIH) - USA, NASA Goddard Space Flight Center, Lab Observat Cosmol, Goddard Space Flight Ctr
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  • G. Folatelli, Univ Nacl La Plata, National University of La Plata, Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), IALP, CONICET, Fac Ciencias Astron & Geofis
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  • Wendy L. Freedman, Univ Chicago, University of Chicago, Dept Astron & Astrophys
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  • F. Forster, Univ Chile, Universidad de Chile, Dept Astron
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  • L. Galbany, Univ Pittsburgh, Pennsylvania Commonwealth System of Higher Education (PCSHE), University of Pittsburgh, Dept Phys & Astron, PITT PACC
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  • C. Gall, Univ Copenhagen, Niels Bohr Institute, University of Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr
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  • S. Gonzalez-Gaitan, Inst Super Tecn, Universidade de Lisboa, CENTRA Ctr Astrofis & Gravitacao
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  • A. Goobar, Stockholm Univ, Stockholm University, Oskar Klein Centre, Oskar Klein Ctr, Dept Phys, AlbaNova
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  • M. Hamuy, Univ Chile, Universidad de Chile, Dept Astron
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  • S. Holmbo
  • M. M. Kasliwal, CALTECH, California Institute of Technology, Phys Math & Astron 4Div
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  • K. Krisciunas, Texas A&M Univ, Texas A&M University College Station, Texas A&M University System, George P & Cynthia Woods Mitchell Inst Fundamenta, Dept Phys & Astron
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  • S. Kumar, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • C. Lidman, Australian Natl Univ, Australian National University, Res Sch Astron & Astrophys
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  • J. Lu, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • P. E. Nugent, Univ Calif Berkeley, University of California Berkeley, University of California System, Dept Astron
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  • S. Perlmutter, Univ Calif Berkeley, University of California Berkeley, University of California System, Dept Astron
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  • S. E. Persson, Observ Carnegie Inst Sci, Carnegie Institution for Science
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  • A. L. Piro, Observ Carnegie Inst Sci, Carnegie Institution for Science
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  • D. Rabinowitz, Yale Univ, Yale University, Dept Phys & Astron
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  • M. Roth, GMTO Corp
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  • S. D. Ryder, Macquarie Univ, Macquarie University, Dept Phys & Astron
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  • B. P. Schmidt, Australian Natl Univ, Australian National University, Res Sch Astron & Astrophys
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  • M. Shahbandeh, Florida Int Univ, Florida International University, Florida State University System, Dept Phys
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  • N. B. Suntzeff, Texas A&M Univ, Texas A&M University College Station, Texas A&M University System, George P & Cynthia Woods Mitchell Inst Fundamenta, Dept Phys & Astron
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  • F. Taddia, Stockholm Univ, Oskar Klein Centre, Stockholm University, Dept Astron, Oskar Klein Ctr, AlbaNova
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  • S. Uddin, Observ Carnegie Inst Sci, Carnegie Institution for Science
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  • L. Wang, Chinese Acad Sci, Chinese Academy of Sciences, National Astronomical Observatory, CAS, Key Lab Opt Astron, Natl Astron Observ, Chinese Acad Sci, South Amer Ctr Astron, China Chile Joint Ctr Astron

Shifting the focus of Type Ia supernova (SN Ia) cosmology to the near infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our reliance on the empirical width-luminosity relation and uncertain dust laws. Observations in the NIR are also crucial for our understanding of the origins and evolution of these events, further improving their cosmological utility. Any future experiments in the rest-frame NIR will require knowledge of the SN Ia NIR spectroscopic diversity, which is currently based on a small sample of observed spectra. Along with the accompanying paper, Phillips et al., we introduce the Carnegie Supernova Project-II (CSP-II), to follow-up nearby SNe Ia in both the optical and the NIR. In particular, this paper focuses on the CSP-II NIR spectroscopy program, describing the survey strategy, instrumental setups, data reduction, sample characteristics, and future analyses on the data set. In collaboration with the Harvard-Smithsonian Center for Astrophysics (CfA) Supernova Group, we obtained 661 NIR spectra of 157 SNe Ia. Within this sample, 451 NIR spectra of 90 SNe Ia have corresponding CSP-II follow-up light curves. Such a sample will allow detailed studies of the NIR spectroscopic properties of SNe Ia, providing a different perspective on the properties of the unburned material; the radioactive and stable nickel produced; progenitor magnetic fields; and searches for possible signatures of companion stars.

Original languageEnglish
Article number014002
JournalPublications of the Astronomical Society of the Pacific
Volume131
Issue995
Number of pages16
ISSN0004-6280
DOIs
Publication statusPublished - Jan 2019

    Research areas

  • (stars:) supernovae: general, (cosmology:) dark energy, CHANDRASEKHAR-MASS MODELS, DELAYED-DETONATION MODEL, WHITE-DWARF MODELS, IA SUPERNOVAE, K-CORRECTIONS, PEAK-LUMINOSITY, LIGHT CURVES, REDSHIFT, SPECTRA, NUCLEOSYNTHESIS

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