2003/07/09 by J. Afonso, A. Hopkins, B. Mobasher +1 · 39 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Measure (data warehouse) #Redshift #Star formation #astro-ph
paper · pdf · doi:10.1086/378256
published in The Astrophysical Journal 597(1), 269-273 (IOP Publishing) · 9 pages (including 5 encapsulated postscript figures), aastex, uses emulateapj5.sty. Accepted for publication in ApJ
arxiv created 2003/07/09 · openalex publication_date 2003/10/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Many investigations of star formation rates (SFRs) in galaxies have explored details of dust obscuration, with a number of recent analyses suggesting that obscuration appears to increase in systems with high rates of star formation. To date, these analyses have been primarily based on nearby ( z ≤ 0.03) or UV-selected samples. Using 1.4 GHz imaging and optical spectroscopic data from the Phoenix Deep Survey, the SFR-dependent obscuration is explored. The use of a radio-selected sample shows that previous studies exploring SFR-dependent obscurations have been biased against obscured galaxies. The observed relation between obscuration and SFR is found to be an unsuitable obscuration measure for individual galaxies. Nevertheless, it is shown to be successful as a first-order correction for large samples of galaxies when no other measure of obscuration is available, out to intermediate redshifts ( z ≈ 0.8).