Optical spectra of Type Ia supernovae at z=0.46 and z=1.2

被引：45

作者：

Coil, AL ^{[1
]}

Matheson, T

Filippenko, AV

Leonard, DC

Tonry, J

Riess, AG

Challis, P

Clocchiatti, A

Garnavich, PM

Hogan, CJ

Jha, S

Kirshner, RP

Leibundgut, B

Phillips, MM

Schmidt, BP

Schommer, RA

Smith, RC

Soderberg, AM

Spyromilio, J

Stubbs, C

Suntzeff, NB

Woudt, P

机构：

[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[2] Univ Hawaii, Astron Inst, Honolulu, HI 96822 USA

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

[4] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[5] Pontificia Univ Catolica Chile, Dept Astron & Astrofis, Santiago 22, Chile

[6] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[7] European So Observ, D-85748 Garching, Germany

[8] Univ Washington, Dept Astron, Seattle, WA 98195 USA

[9] European So Observ, D-85748 Garching, Germany

[10] Cerro Tololo Interamer Observ, La Serena, Chile

[11] Res Sch Astron & Astrophys, Weston, ACT 2611, Australia

[12] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[13] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 544卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

cosmology : observations; supernovae : general; supernovae; individual; (SN; 1999ff; SN; 1999fv);

D O I：

10.1086/317311

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present optical spectra, obtained with the Keck 10 m telescope, of two high-redshift Type Ia supernovae (SNe Ia) discovered by the High-z Supernova Search Team: SN 1999ff at z = 0.455 and SN 1999fv at z similar to 1.2, the highest redshift published SN Ia spectrum. Both SNe were at maximum light when the spectra were taken. We compare our high-z spectra with low-z normal and peculiar SNe Ia as well as with SNe Ic, Ib, and II. There are no significant differences between SN 1999ff and normal SNe Ia at low redshift. SN 1999fv appears to be an SN Ia and does not resemble the most peculiar nearby SNe Ia.

引用

页码：L111 / L114

页数：4

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