Direct evidence for an early reionization of the universe?

被引：21

作者：

Panagia, N

Fall, SM

Mobasher, B

Dickinson, M

Ferguson, HC

Giavalisco, M

Stern, D

Wiklind, T

机构：

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

[2] European Space Agcy, Dept Space Sci, F-75738 Paris, France

[3] Natl Opt Astron Observ, Tucson, AZ 85726 USA

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 633卷 / 01期

关键词：

cosmology : observations; cosmology : theory; early universe; galaxies : evolution; galaxies : high-redshift; galaxies : individual (UDF 033238.7-274839.8) intergalactic medium;

D O I：

10.1086/498094

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the possible reionization of the intergalactic medium by the source UDF 033238.7 - 274839.8 (hereafter HUDF-JD2), which was discovered in deep HST/VLT/Spitzer images obtained as part of the Great Observatories Origins Deep Survey and Hubble Ultra Deep Field projects. Mobasher et al. have identified HUDF-JD2 as a massive (similar to 6 x 10(11) M circle dot) post-starburst galaxy at redshift z greater than or similar to 6.5. We find that HUDF-JD2 may be capable of reionizing its surrounding region of the universe, starting the process at a redshift as high as z approximate to 15 +/- 5.

引用

页码：L1 / L4

页数：4

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