J/PASP/131/A4002 Carnegie Supernova Project-II (Hsiao+, 2019)
Carnegie Supernova Project-II: The near-infrared spectroscopy program.
Hsiao E.Y., Phillips M.M., Marion G.H., Kirshner R.P., Morrell N.,
Sand D.J., Burns C.R., Contreras C., Hoeflich P., Stritzinger M.D.,
Valenti S., Anderson J.P., Ashall C., Baltay C., Baron E., Banerjee D.P.K.,
Davis S., Diamond T.R., Folatelli G., Freedman W.L., Forster F.,
Galbany L., Gall C., Gonzalez-Gaitan S., Goobar A., Hamuy M., Holmbo S.,
Kasliwal M.M., Krisciunas K., Kumar S., Lidman C., Lu J., Nugent P.E.,
Perlmutter S., Persson S.E., Piro A.L., Rabinowitz D., Roth M., Ryder S.D.,
Schmidt B.P., Shahbandeh M., Suntzeff N.B., Taddia F., Uddin S., Wang L.
<PASP, 131, 014002 (2019)>
=2019PASP..131a4002H 2019PASP..131a4002H (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae
Keywords: (stars:) supernovae: general - (cosmology:) dark energy
Abstract:
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.
Description:
The SNe Ia classified by FIRE are listed in Table 1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 157 Summary of CSP-II NIR Spectroscopy of SNe Ia
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 29 A29 --- Name SN Name
31- 39 A9 --- OName Other name
42- 43 I2 --- Nsp Number of NIR Spectra
45- 47 A3 --- Sample [C,P ] Sample (1)
49- 54 F6.4 --- z Host heliocentric redshift (2)
55 A1 --- n_z [de] Note on z (3)
57- 76 A20 --- Ref Classification by FIRE (4)
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Note (1): Samples as follows:
C = SN Ia is in the "Cosmology" sample
P = SN Ia is in the "Physics" sample
Note (2): Host redshifts are from the NASA/IPAC Extragalactic Database (NED)
or measured by CSP-II, unless otherwise noted.
Note (3): Note on redshift as follows:
d = The redshift is derived from the SN spectrum
e = The redshift of Coma Cluster is adopted
Note (4): ATel and CBET numbers for the SNe Ia classified by FIRE.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 19-Apr-2022