Properties of the z = 2.73 galaxy, MS1512-cB58

被引：0

作者：

Sara R. Heap

Ivan Hubeny

Thierry M. Lanz

机构：

[1] Laboratory for Astronomy and Solar Physics,

[2] NASA's Goddard Space Flight Center,undefined

来源：

Astrophysics and Space Science | 2001年 / 277卷

关键词：

galaxies: individual (MS1512-cB58); galaxies: evolution; cosmology: observations; ultraviolet;

D O I：

暂无

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学科分类号：

摘要：

MS1512-cB58 is an z=2.73 galaxy whose apparent brightness is amplified by30–50X due to gravitationally lensing. The restframe far-UV spectrum of cB58 that was obtained by Keck-I/LRISis `one of the best ultraviolet spectra of a starburst galaxy obtained at any redshift' (Pettini et al. 2000). We have analyzed and modeled the spectrum of this galaxy in order to learn the properties of high-redshift galaxies. We find that our model spectrum is a near match to the observed spectrum of cB58 if the galaxy has a SMC-like metallicity, and has a Salpeter IMF extending up to ∼ 100 Modot. The spectrum of cB58 also shows many absorption lines formed in a giant, expanding gas shell surrounding the star-forming complex. We show preliminary findings of the properties of the giant HII region based on our CLOUDSPEC model.

引用

页码：263 / 266

页数：3