Search for spectral evolution in high-redshift type Ia supernovae

被引：0
|
作者：
Garavini, G [1 ]
机构：
[1] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France
[2] Univ Paris 07, CNRS, IN2P3, LPNHE, F-75252 Paris, France
来源：
1604-2004: Supernovae as Cosmological Lighthouses | 2005年 / 342卷
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D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this poster a quantitative comparison of low and high-redshift supernovae by means of spectral indicators is presented. Measurements of Ca II H&K expansion velocity and equivalent width-like measurements of 12 high-redshift supernovae (0.212 < z < 0.912) are found statistically consistent with those of nearby supernovae. One of the supernovae in our dataset, SN 2002fd (z=0.279), shows spectral characteristics similar to peculiars SN 1991T/SN 1999aa.
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页码：260 / 261
页数：2
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