Improved Cosmological Constraints from New, Old and Combined Supernova Datasets

Autor: Kowalski, M, Rubin, D, Aldering, G, Agostinho, RJ, Amadon, A, Amanullah, R, Balland, C, Barbary, K, Blanc, G, Challis, PJ, Conley, A, Connolly, NV, Covarrubias, R, Dawson, KS, Deustua, SE, Ellis, R, Fabbro, S, Fadeyev, V, Fan, X, Farris, B, Folatelli, G, Frye, BL, Garavini, G, Gates, EL, Germany, L, Goldhaber, G, Goldman, B, Goobar, A, Groom, DE, Haissinski, J, Hardin, D, Hook, I, Kent, S, Kim, AG, Knop, RA, Lidman, C, Linder, EV, Mendez, J, Meyers, J, Miller, GJ, Moniez, M, Mourao, AM, Newberg, H, Nobili, S, Nugent, PE, Pain, R, Perdereau, O, Perlmutter, S, Phillips, MM, Prasad, V, Quimby, R, Regnault, N, Rich, J, Rubenstein, EP, Ruiz-Lapuente, P, Santos, FD, Schaefer, BE, Schommer, RA, Smith, RC, Soderberg, AM, Spadafora, AL, Strolger, L-G, Strovink, M, Suntzeff, NB, Suzuki, N, Thomas, RC, Walton, NA, Wang, L, Wood-Vasey, WM, Yun, JL, Project, SC
Přispěvatelé: Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), California Institute of Technology (CALTECH), Department of Physics, Stockholm University, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Supernova Cosmology Project, Fundação para a Ciência e a Tecnologia (Portugal), German Research Foundation, Department of Energy (US), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2008
Předmět:
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
media_common.quotation_subject
Astrophysics::High Energy Astrophysical Phenomena
Cosmological parameters
Supernovae: general
FOS: Physical sciences
Astrophysics
Cosmological constant
Astrophysics::Cosmology and Extragalactic Astrophysics
Astronomy & Astrophysics
Type (model theory)
Atomic
01 natural sciences
7. Clean energy
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Particle and Plasma Physics
astro-ph
0103 physical sciences
Nuclear
cosmological parameters
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
media_common
Physics
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Equation of state (cosmology)
Cosmology: observations
Astrophysics (astro-ph)
Molecular
Astronomy and Astrophysics
observations [cosmology]
Redshift
Universe
Supernova
Space and Planetary Science
Dark energy
High Energy Physics::Experiment
Supernova Legacy Survey
general [supernovae]
Astronomical and Space Sciences
Physical Chemistry (incl. Structural)
Zdroj: The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2008, 686, pp.749-778. ⟨10.1086/589937⟩
The Astrophysical Journal, 2008, 686, pp.749-778. ⟨10.1086/589937⟩
The Astrophysical Journal, vol 686, iss 2
Kowalski, M; Rubin, D; Aldering, G; Agostinho, RJ; Amadon, A; Amanullah, R; et al.(2008). Improved cosmological constraints from new, old, and combined supernova data sets. Astrophysical Journal, 686(2), 749-778. doi: 10.1086/589937. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/8646z73c
Digital.CSIC. Repositorio Institucional del CSIC
instname
Astrophysical Journal, vol 686, iss 2
ISSN: 0004-637X
1538-4357
DOI: 10.1086/589937⟩
Popis: 30 pags., 17 figs., 12 tabs. 4 apps.
We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations. This >Union> compilation of 414 SNe Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older data sets, as well as the recently extended data set of distant supernovae observed with the Hubble Space Telescope (HST). A single, consistent, and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers. We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO). The constraint we obtain from supernovae on the dark energy density is ¿¿ = 0.713+ 0.027¿0.029(stat)+ 0.036¿0.039(sys) , for a flat, ¿CDM universe. Assuming a constant equation of state parameter, w, the combined constraints from SNe, BAO, and CMB give w = ¿ 0.969+ 0.059¿0.063(stat)+ 0.063¿0.066(sys) . While our results are consistent with a cosmological constant, we obtain only relatively weak constraints on a w that varies with redshift. In particular, the current SN data do not yet significantly constrain w at z > 1. With the addition of our new nearby Hubble-flow SNe Ia, these resulting cosmological constraints are currently the tightest available.
This work was supported in part by the Director, Office of Science, Office of High Energy and Nuclear Physics, US Department of Energy, through contract DE-AC02-05CH11231. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the US Department of Energy under contract DEAC02- 05CH11231. The use of Portuguese time for the YALO telescope was supported by Fundacao para a Ciencia e Tecnologia, Portugal, and by Project PESO/ESO/P/PRO/1257/98. M. K. acknowledges support from the Deutsche Forschungsgemeinschaft (DFG). P. E. N. acknowledges support from the USDepartment of Energy Scientific Discovery throughAdvanced Computing program under contract DE-FG02-06ER06-04. A.M. M. acknowledges financial support from Fundacao para a Ciencia e Tecnologia (FCT), Portugal, through project PESO/P/PRO/ 15139/99.
Databáze: OpenAIRE
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