# THE HETDEX PILOT SURVEY. II. THE EVOLUTION OF THE Lyα ESCAPE FRACTION FROM THE ULTRAVIOLET SLOPE AND LUMINOSITY FUNCTION OF 1.9 < z < 3.8 LAEs

@article{Blanc2011THEHP,
title={THE HETDEX PILOT SURVEY. II. THE EVOLUTION OF THE Ly$\alpha$ ESCAPE FRACTION FROM THE ULTRAVIOLET SLOPE AND LUMINOSITY FUNCTION OF 1.9 < z < 3.8 LAEs},
author={Guillermo A. Blanc and Joshua Jesse Adams and Karl Gebhardt and Gary J. Hill and Niv Drory and Lei Hao and Ralf Bender and Robin Ciardullo and Steven L. Finkelstein and Eric Gawiser and Caryl Gronwall and Ulrich Hopp and Donghui Jeong and Ralf Kelzenberg and Eiichiro Komatsu and Phillip J. MacQueen and Jeremy D. Murphy and Martin M. Roth and Donald P. Schneider and J. K. Cannizzo Department of Astronomy and University of Texas Austin and Austin and Tx and Texas Cosmology Center and TX McDonald Observatory and Max Planck Institute for extraterrestrial Physics and Garching and H Germany and Shanghai Astronomical Observatory and Shanghai and China. and University Observatory Munich and Munich and Department of Physics Astronomy and Astrophysics and Pennsylvania State University and University Park and Pa and P. George and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy and Department of Engineering Physics and Texas AM University and College Station and Rutgers University and Piscataway and Nj and currently Massachusetts Institute of Technology and Pasadena and Ca and Astrophysikalisches Institut Potsdam and Postdam and Current Address Las Cumbres Observatory and Santa Barbara},
journal={The Astrophysical Journal},
year={2011},
volume={736},
pages={31}
}
We study the escape of Lyα photons from Lyα emitting galaxies (LAEs) and the overall galaxy population using a sample of 99 LAEs at 1.9 (3-6) × 1042 erg s–1 (0.25-0.5 L*), have a mean E(B – V) = 0.13 ± 0.01, implying an attenuation of ~70% in the UV. They show a median UV uncorrected SFR = 11 M ☉ yr–1, dust-corrected SFR = 34 M ☉ yr–1, and Lyα equivalent widths (EWs) which are consistent with normal stellar populations. We measure a median Lyα escape fraction of 29%, with a large scatter and… Expand
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