English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the escape of Ly-alpha photons from Ly-alpha emitting galaxies(LAEs) and the overall galaxy population using a sample of 99 LAEs at 1.9<z<3.8detected through integral-field spectroscopy of blank fields by the HETDEXPilot Survey. For 89 LAEs showing counterparts in deep broad-band images wemeasure the rest-frame UV luminosity and the UV slope, which we use to estimateE(B-V) under the assumption of a constant intrinsic UV slope for LAEs. Thesetwo quantities are used to measure the dust-corrected star formation rate(SFR). A comparison between the observed Ly-alpha luminosity and that predictedby the dust-corrected SFR yields the Ly-alpha escape fraction. We also measurethe Ly-alpha luminosity function. Integration of the luminosity functionprovides a measurement of the Ly-alpha luminosity density across our redshiftrange. We combine our data with that from other surveys at 0.3<z<7.7 to tracethe evolution of the Ly-alpha luminosity density. We then compare it to thatexpected from the star-formation history of the universe in order tocharacterize the evolution of the Ly-alpha escape fraction of the overallgalaxy population [abriged]

The HETDEX Pilot Survey. II. The Evolution of the Ly-alpha Escape Fraction from the UV Slope and Luminosity Function of 1.9