IMPROVED COSMOLOGICAL CONSTRAINTS FROM NEW, OLD, AND COMBINED SUPERNOVA DATA SETS

被引：1243

作者：

Kowalski, M. ^{[1
]}

Rubin, D. ^{[2
,3
]}

Aldering, G. ^{[2
]}

Agostinho, R. J. ^{[4
]}

Amadon, A. ^{[5
]}

Amanullah, R. ^{[6
]}

Balland, C. ^{[7
,22
]}

Barbary, K. ^{[2
,3
]}

Blanc, G. ^{[8
]}

Challis, P. J. ^{[9
]}

Conley, A. ^{[10
]}

Connolly, N. V. ^{[11
]}

Covarrubias, R. ^{[12
]}

Dawson, K. S. ^{[2
]}

Deustua, S. E. ^{[13
]}

Ellis, R. ^{[14
]}

Fabbro, S. ^{[15
,16
]}

Fadeyev, V. ^{[17
]}

Fan, X. ^{[18
]}

Farris, B. ^{[19
]}

Folatelli, G.

Frye, B. L. ^{[20
]}

Garavini, G. ^{[21
]}

Gates, E. L. ^{[23
]}

Germany, L. ^{[24
]}

Goldhaber, G. ^{[2
,3
]}

Goldman, B. ^{[25
]}

Goobar, A. ^{[21
]}

Groom, D. E. ^{[2
]}

Haissinski, J. ^{[26
]}

Hardin, D. ^{[7
,22
]}

Hook, I. ^{[27
]}

Kent, S. ^{[28
]}

Kim, A. G. ^{[2
]}

Knop, R. A. ^{[29
]}

Lidman, C. ^{[30
]}

Linder, E. V. ^{[6
]}

Mendez, J. ^{[31
,32
]}

Meyers, J. ^{[3
]}

Miller, G. J. ^{[33
]}

Moniez, M. ^{[26
]}

Mourao, A. M. ^{[15
,16
]}

Newberg, H. ^{[34
]}

Nobili, S. ^{[21
]}

Nugent, P. E. ^{[2
]}

Pain, R. ^{[7
,22
]}

Perdereau, O. ^{[26
]}

Perlmutter, S. ^{[2
,3
]}

Phillips, M. M. ^{[35
]}

Prasad, V. ^{[2
]}

机构：

[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[2] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Univ Lisbon, Ctr Astron & Astrofis, Astron Observ, P-1349018 Lisbon, Portugal

[5] CEA Saclay, DSM DAPNIA, F-91191 Gif Sur Yvette, France

[6] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[7] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France

[8] Univ Paris 07, APC, F-75205 Paris 13, France

[9] Harvard Univ, Ctr Astrophys, Cambridge, MA 02138 USA

[10] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H8, Canada

[11] Hamilton Coll, Dept Phys, Clinton, NY 13323 USA

[12] Observ Carnegie Inst Washington, Pasadena, CA USA

[13] Amer Astron Soc, Washington, DC 20009 USA

[14] CALTECH, Pasadena, CA 91125 USA

[15] Univ Tecn Lisboa, CENTRA, P-1049 Lisbon, Portugal

[16] IST, Dept Fis, P-1049 Lisbon, Portugal

[17] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

[18] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[19] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[20] Dublin City Univ, Dept Phys Sci, Dublin 9, Ireland

[21] Stockholm Univ, Dept Phys, Albanova Univ Ctr, S-10691 Stockholm, Sweden

[22] Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France

[23] Univ Calif Santa Cruz, Lick Observ, Mt Hamilton, CA 95140 USA

[24] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia

[25] MPIA, D-69117 Heidelberg, Germany

[26] Univ Paris Sud, CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[27] Univ Oxford, Sub Dept Astrophys, Oxford OX1 3RH, England

[28] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[29] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37240 USA

[30] European So Observ, Santiago 19, Chile

[31] Isaac Newton Grp, Santa Cruz De La Palmas 38780, Islas Canarias, Spain

[32] Univ Barcelona, Dept Astron, Barcelona, Spain

[33] Southwestern Coll, Dept Astron, Chula Vista, CA 91910 USA

[34] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA

[35] Carnegie Observ, Las Campanas Observ, La Serena, Chile

[36] Adv Fuel Res Inc, E Hartford, CT 06108 USA

[37] Univ Lisbon, Dept Phys, Fac Sci, P-1749016 Lisbon, Portugal

[38] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[39] Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, La Serena, Chile

[40] Western Kentucky Univ, Dept Phys & Astron, Bowling Green, KY 42101 USA

[41] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[42] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

来源：

ASTROPHYSICAL JOURNAL | 2008年 / 686卷 / 02期

基金：

英国科学技术设施理事会; 美国国家科学基金会;

关键词：

cosmological parameters; cosmology: observations; supernovae: general;

D O I：

10.1086/589937

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 Omega(Lambda) = 0.713(-0.029)(+0.027)(stat)(-0.039)(+0.036)(sys), for a flat, Lambda CDM universe. Assuming a constant equation of state parameter, w, the combined constraints from SNe, BAO, and CMB give w = -0.969(-0.063)(+0.059)(stat)(-0.066)(+0.063)(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.

引用

页码：749 / 778

页数：30

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