Calibrating UV Emissivity And Dust Absorption At z \approx 3
Abstract
We detail a technique for estimating the UV extinction and luminosity of UV selected galaxies using UV quantities alone. The technique is based on a tight correlation between the ratios of far infrared (FIR) to UV flux ratios and UV color for a sample of local starbursts. A simple empirical fit to this correlation can be used to estimate UV extinction as a function of color. This method is applied to a sample of Lyman-break systems selected from the HDF and having . The resultant UV emissivity is at least nine times higher than the original Madau et al. (1996) estimate. This technique can be readily applied to other rest-frame UV surveys.
Cite
@article{arxiv.astro-ph/9812360,
title = {Calibrating UV Emissivity And Dust Absorption At z \approx 3},
author = {Gerhardt R. Meurer and Timothy M. Heckman and Daniela Calzetti},
journal= {arXiv preprint arXiv:astro-ph/9812360},
year = {2009}
}
Comments
To appear in "After The Dark Ages: When Galaxies Were Young", edited by S.S. Holt, and E.P. Smith. 4 pages, 3 figures