X-ray and radio emission from ultraviolet-selected star-forming galaxies at redshifts 1.5 ≲ z ≲ 3.0 in the GOODS-North field

被引：89

作者：

Reddy, NA ^{[1
]}

Steidel, CC ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 603卷 / 01期

关键词：

dust; extinction; galaxies : evolution; galaxies : high-redshift; galaxies : starburst; radio continuum : galaxies; X-rays : galaxies;

D O I：

10.1086/383087

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have examined the stacked radio and X-ray emission from UV-selected galaxies spectroscopically confirmed to lie in the redshift range in the Great Observatories Origins Deep Survey-North field to determine 1.5 less than or similar to z less than or similar to 3.0 their average extinction and star formation rates (SFRs). The X-ray and radio data are obtained from the Chandra 2 Ms survey and the Very Large Array, respectively. There is a good agreement among the X-ray, radio, and dereddened UV estimates of the average SFR for our sample of galaxies of similar to50 M-circle dot yr(-1), indicating that the z similar to 2 locally calibrated SFR relations appear to be statistically valid in the redshift range. We find that 1.5 less than or similar to z less than or similar to 3.0 UV-estimated SFRs (uncorrected for extinction) underestimate the bolometric SFRs as determined from the 2 10 keV X-ray luminosity by a factor of similar to4.5-5.0 for galaxies over a large range in redshift,. 1.0 less than or similar to z less than or similar to 3.5

引用

页码：L13 / L16

页数：4

共 29 条

[11] X-ray emitting young stars in the Orion Nebula [J].