Optical spectra of the type Ia supernova 1998aq

被引：90

作者：

Branch, D

Garnavich, P

Matheson, T

Baron, E

Thomas, RC

Hatano, K

Challis, P

Jha, S

Kirshner, RP

机构：

[1] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA

[2] Univ Notre Dame, Dept Phys & Astron, Notre Dame, IN 46556 USA

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

[4] Univ Tokyo, Dept Astron, Sch Sci, Tokyo 113, Japan

来源：

ASTRONOMICAL JOURNAL | 2003年 / 126卷 / 03期

基金：

美国国家科学基金会;

关键词：

supernovae : general; supernovae : individual (SN 1998aq);

D O I：

10.1086/377016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present 29 optical spectra of the normal Type Ia SN 1998aq, ranging from 9 days before to 241 days after the time of maximum brightness. This spectrocopic data set, together with photometric data presented elsewhere, makes SN 1998aq one of the best observed Type Ia supernovae at optical wavelengths. We use the parameterized supernova synthetic-spectrum code SYNOW to study line identifications in the early photospheric-phase spectra. The results include evidence for lines of singly ionized carbon, at ejection velocities as low as 11,000 km s(-1). Implications for SN Ia explosion models are discussed.

引用

页码：1489 / 1498

页数：10