SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 < z < 1.12 AND THE UNION2 COMPILATION

被引：1152

作者：

Amanullah, R. ^{[1
,2
]}

Lidman, C. ^{[2
]}

Rubin, D. ^{[3
,4
]}

Aldering, G. ^{[3
]}

Astier, P. ^{[5
]}

Barbary, K. ^{[3
,4
]}

Burns, M. S. ^{[6
]}

Conley, A. ^{[7
]}

Dawson, K. S. ^{[8
]}

Deustua, S. E. ^{[9
]}

Doi, M. ^{[10
]}

Fabbro, S. ^{[11
]}

Faccioli, L. ^{[3
,12
]}

Fakhouri, H. K. ^{[3
,4
]}

Folatelli, G. ^{[13
]}

Fruchter, A. S. ^{[9
]}

Furusawa, H. ^{[14
]}

Garavini, G. ^{[1
]}

Goldhaber, G. ^{[4
]}

Goobar, A. ^{[1
,2
]}

Groom, D. E. ^{[3
]}

Hook, I. ^{[15
,16
]}

Howell, D. A. ^{[17
,18
]}

Kashikawa, N. ^{[14
]}

Kim, A. G. ^{[3
]}

Knop, R. A. ^{[19
]}

Kowalski, M. ^{[20
]}

Linder, E. ^{[12
]}

Meyers, J. ^{[3
,4
]}

Morokuma, T. ^{[14
,26
]}

Nobili, S. ^{[1
,2
]}

Nordin, J. ^{[1
,2
]}

Nugent, P. E. ^{[3
]}

Ostman, L. ^{[1
,2
]}

Pain, R. ^{[5
]}

Panagia, N. ^{[9
,21
]}

Perlmutter, S. ^{[3
,4
]}

Raux, J. ^{[5
]}

Ruiz-Lapuente, P. ^{[22
]}

Spadafora, A. L. ^{[3
]}

Strovink, M. ^{[3
,4
]}

Suzuki, N. ^{[3
]}

Wang, L. ^{[23
]}

Wood-Vasey, W. M. ^{[24
]}

Yasuda, N. ^{[25
]}

机构：

[1] Stockholm Univ, Dept Phys, Albanova Univ Ctr, SE-10691 Stockholm, Sweden

[2] Stockholm Univ, Dept Phys, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden

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

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

[5] Univ Paris 07, Univ Paris 06, LPNHE, CNRS,IN2P3, F-75005 Paris, France

[6] Colorado Coll, Colorado Springs, CO 80903 USA

[7] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA

[8] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

[9] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[10] Univ Tokyo, Sch Sci, Inst Astron, Tokyo 1810015, Japan

[11] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada

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

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

[14] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[15] Univ Oxford, Subdept Astrophys, Oxford OX1 3RH, England

[16] INAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, RM, Italy

[17] Las Cumbres Observ Global Telescope Network, Goleta, CA 93117 USA

[18] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[19] Univ Bonn, Meta Inst Computat Astron, D-53115 Bonn, Germany

[20] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[21] INAF Osservatorio Astrofis Catania, I-95123 Catania, Italy

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

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

[24] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[25] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[26] Japan Soc Promot Sci, Tokyo, Japan

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 716卷 / 01期

基金：

日本学术振兴会;

关键词：

cosmological parameters; cosmology: observations; supernovae: general; HIGH-REDSHIFT SUPERNOVAE; DARK ENERGY; PRECISE DISTANCE; LEGACY SURVEY; DATA RELEASE; DUST; CONSTRAINTS; DIAGRAM; OMEGA(LAMBDA); ULTRAVIOLET;

D O I：

10.1088/0004-637X/716/1/712

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts. Light curves, including high signal-to-noise Hubble Space Telescope data, and spectra of six SNe Ia that were discovered during 2001, are presented. Additionally, for the two SNe with z > 1, we present ground-based J-band photometry from Gemini and the Very Large Telescope. These are among the most distant SNe Ia for which ground-based near-IR observations have been obtained. We add these six SNe Ia together with other data sets that have recently become available in the literature to the Union compilation. We have made a number of refinements to the Union analysis chain, the most important ones being the refitting of all light curves with the SALT2 fitter and an improved handling of systematic errors. We call this new compilation, consisting of 557 SNe, the Union2 compilation. The flat concordance Lambda CDM model remains an excellent fit to the Union2 data with the best-fit constant equation-of-state parameter w = -0.997(-0.054)(+0.050)(stat)(-0.082)(+0.077)(stat + sys together) for a flat universe, or w = -1.038(-0.059)(+0.056)(stat)(-0.097)+(0.093)(stat + sys together) with curvature. We also present improved constraints on w(z). While no significant change in w with redshift is detected, there is still considerable room for evolution in w. The strength of the constraints depends strongly on redshift. In particular, at z greater than or similar to 1, the existence and nature of dark energy are only weakly constrained by the data.

引用

页码：712 / 738

页数：27

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SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 &lt; z &lt; 1.12 AND THE UNION2 COMPILATION

SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 < z < 1.12 AND THE UNION2 COMPILATION