SIMBAD references

2017ApJ...835..166D - Astrophys. J., 835, 166-166 (2017/February-1)

A Type II supernova Hubble diagram from the CSP-I, SDSS-II, and SNLS surveys.

DE JAEGER T., GONZALEZ-GAITAN S., HAMUY M., GALBANY L., ANDERSON J.P., PHILLIPS M.M., STRITZINGER M.D., CARLBERG R.G., SULLIVAN M., GUTIERREZ C.P., HOOK I.M., HOWELL D.A., HSIAO E.Y., KUNCARAYAKTI H., RUHLMANN-KLEIDER V., FOLATELLI G., PRITCHET C. and BASA S.

Abstract (from CDS):

The coming era of large photometric wide-field surveys will increase the detection rate of supernovae by orders of magnitude. Such numbers will restrict spectroscopic follow-up in the vast majority of cases, and hence new methods based solely on photometric data must be developed. Here, we construct a complete Hubble diagram of Type II supernovae (SNe II) combining data from three different samples: the Carnegie Supernova Project-I, the Sloan Digital Sky Survey II SN, and the Supernova Legacy Survey. Applying the Photometric Color Method (PCM) to 73 SNe II with a redshift range of 0.01-0.5 and with no spectral information, we derive an intrinsic dispersion of 0.35 mag. A comparison with the Standard Candle Method (SCM) using 61 SNe II is also performed and an intrinsic dispersion in the Hubble diagram of 0.27 mag, i.e., 13% in distance uncertainties, is derived. Due to the lack of good statistics at higher redshifts for both methods, only weak constraints on the cosmological parameters are obtained. However, assuming a flat universe and using the PCM, we derive the universe's matter density: Ωm=0.32–0.21+0.30 providing a new independent evidence for dark energy at the level of two sigma.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): distance scale - galaxies: distances and redshifts - supernovae: general - supernovae: general

VizieR on-line data: <Available at CDS (J/ApJ/835/166): table1.dat>

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 89

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2022.10.04-15:22:09

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