The rate of Type Ia supernovae at high redshift

被引：64

作者：

Barris, BJ ^{[1
]}

Tonry, JL ^{[1
]}

机构：

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

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 637卷 / 01期

关键词：

supernovae : general; surveys;

D O I：

10.1086/498292

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive the rates of Type Ia supernovae (SNe Ia) over a wide range of redshifts using a complete sample from the IfA Deep Survey. This sample of more than 100 SNe Ia is the largest set ever collected from a single survey and therefore uniquely powerful for a detailed supernova rate (SNR) calculation. Measurements of the SNR as a function of cosmological time offer a glimpse into the relationship between the star formation rate (SFR) and Type Ia SNR and may provide evidence for the progenitor pathway. We observe a progressively increasing Type Ia SNR between redshifts z approximate to 0.3 and 0.8. The Type Ia SNR measurements are consistent with a short time delay (t approximate to 1 Gyr) with respect to the SFR, indicating a fairly prompt evolution of SN Ia progenitor systems. We derive a best-fit value of SFR/SNR approximate to 580 h(70)(-2) 70 M-circle dot per SN Ia for the conversion factor between the star formation and the SN Ia rates, as determined for a delay time of t approximate to 1 Gyr between the SFR and the Type Ia SNR. More complete measurements of the Type Ia SNR at z > 1 are necessary to conclusively determine the SFR-SNR relationship and constrain SN Ia evolutionary pathways.

引用

页码：427 / 438

页数：12

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