The Redshift Evolution of Extended Lyα Emission in HETDEX. I. Imaging Methods and Emission Measurements

We investigate extended Ly α emission using integral-field unit (IFU) data from the Hobby–Eberly Telescope Dark Energy Experiment (or HETDEX). We apply the modified Shepard method to image 106,853 Ly α emitters (LAEs) and median-stack them as functions of rest-frame Ly α equivalent width (EW), Ly α...

Full description

Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	Brianna McKay, Sarah Tuttle, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J. Farrow, Steven L. Finkelstein, Karl Gebhardt, Chenxu Liu, Gregory Zeimann, Chris Byrohl
Format:	Article
Language:	English
Published:	IOP Publishing 2026-01-01
Subjects:	Lyman-alpha galaxies Circumgalactic medium Galaxy evolution High-redshift galaxies
Online Access:	https://doi.org/10.3847/1538-4357/ae4de7