Quantitative comparison between type Ia supernova spectra at low and high redshifts: a case study

被引：51

作者：

Garavini, G. ^{[1
]}

Folatelli, G.

Nobili, S.

Aldering, G.

Amanullah, R.

Antilogus, P.

Astier, P.

Blanc, G.

Bronder, T.

Burns, M. S.

Conley, A.

Deustua, S. E.

Doi, M.

Fabbro, S.

Fadeyev, V.

Gibbons, R.

Goldhaber, G.

Goobar, A.

Groom, D. E.

Hook, I.

Howell, D. A.

Kashikawa, N.

Kim, A. G.

Kowalski, M.

Kuznetsova, N.

Lee, B. C.

Lidman, C.

Mendez, J.

Morokuma, T.

Motohara, K.

Nugent, P. E.

Pain, R.

Perlmutter, S.

Quimby, R.

Raux, J.

Regnault, N.

Ruiz-Lapuente, P.

Sainton, G.

Schahmaneche, K.

Smith, E.

Spadafora, A. L.

Stanishev, V.

Thomas, R. C.

Walton, N. A.

Wang, L.

Wood-Vasey, W. M.

Yasuda, N.

机构：

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

[2] Carnegie Inst Washington Observ, Pasadena, CA 91101 USA

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

[4] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France

[5] Univ Paris 07, F-75221 Paris 05, France

[6] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[7] Univ Oxford, Dept Phys, Nucl & Astrophys Lab, Oxford OX1 3RH, England

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

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

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

[11] Univ Tokyo, Sch Sci, Inst Astron, Mitaka, Tokyo 1810015, Japan

[12] Univ Tecn Lisboa, CENTRA, P-1100 Lisbon, Portugal

[13] Univ Tecn Lisboa, Dep Fis, P-1100 Lisbon, Portugal

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

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

[16] Natl Astron Observ, Mitaka, Tokyo 1810058, Japan

[17] European So Observ, Santiago 19, Chile

[18] Isaac Newton Grp, Islas Canarias 38780, Spain

[19] Univ Barcelona, Dept Astron, E-08007 Barcelona, Spain

[20] Astron Inst, Cambridge CB3 0HA, England

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

来源：

ASTRONOMY & ASTROPHYSICS | 2007年 / 470卷 / 02期

关键词：

stars : supernovae : general; cosmology : early Universe;

D O I：

10.1051/0004-6361:20065400

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We develop a method to measure the strength of the absorption features in type Ia supernova ( SN Ia) spectra and use it to make a quantitative comparisons between the spectra of type Ia supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift ( 0.212 <= z <= 0.912) SNe Ia observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca ii H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe Ia ( z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.

引用

页码：411 / 424

页数：14

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