2004/01/21 by Naveen A. Reddy, Charles C. Steidel · 4 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Extinction (optical mineralogy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Luminosity #Luminous infrared galaxy #Radio galaxy #Redshift #Star formation #astro-ph
paper · pdf · doi:10.1086/383087
published as Astrophys.J. 603 (2004) L13-L16 · 5 pages, 1 figure, Accepted by ApJ Letters
arxiv created 2004/01/21 · openalex publication_date 2004/02/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have examined the stacked radio and X-ray emission from UV-selected galaxies spectroscopically confirmed to lie in the redshift range 1.5 ≲ z ≲ 3.0 in the Great Observatories Origins Deep Survey-North field to determine 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 z ~ 2 galaxies of ~50 M ☉ yr -1 , indicating that the locally calibrated SFR relations appear to be statistically valid in the redshift range 1.5 ≲ z ≲ 3.0. We find that UV-estimated SFRs (uncorrected for extinction) underestimate the bolometric SFRs as determined from the 2-10 keV X-ray luminosity by a factor of ~4.5-5.0 for galaxies over a large range in redshift, 1.0 ≲ z ≲ 3.5.