The HETDEX Survey: The Lyα Escape Fraction from 3D-HST Emission-Line Galaxies at z ∼ 2
Abstract
In this work, we measure the Lyα escape fraction of 935 [O iii]-emitting galaxies between 1.9 z β to Lyα ratios, we determine the Lyα escape fraction as a function of stellar mass, star-formation rate, internal reddening, size, and [O iii]/Hβ ratio. We show that the escape fraction of Lyα correlates with a number of parameters, such as galaxy size, star-formation rate, and nebular excitation. However, we also demonstrate that most of these relations are indirect, and that the primary variables controlling the escape of Lyα are likely to be stellar mass and internal extinction. Overall, the escape of Lyα declines from ≳16% in galaxies with to ≲1% for systems with , with the sample’s mean escape fraction being .
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 01, 2021
- Source ID
- 10.3847/1538-4357/abedb9
Entities
People
- Caryl Gronwall
- Daniel J. Farrow
- Donald P. Schneider
- Eric Gawiser
- Erin Mentuch Cooper
- Gary J. Hill
- Gregory R. Zeimann
- Guillermo A. Blanc
- Karl Gebhardt
- L. Wisotzki
- Laurel H. Weiss
- Robin Bruce Ciardullo
- Shardha Jogee
- Steven Janowiecki
- Steven L. Finkelstein
- William P. Bowman
Organizations
- National Science Foundation
- United States Air Force