Lyα Halos around [O iii]-selected Galaxies in HETDEX

Lujan Niemeyer, Maja and Bowman, William P. and Ciardullo, Robin and Gronke, Max and Komatsu, Eiichiro and Fabricius, Maximilian and Farrow, Daniel J. and Finkelstein, Steven L. and Gebhardt, Karl and Gronwall, Caryl and Hill, Gary J. and Liu, Chenxu and Cooper, Erin Mentuch and Schneider, Donald P. and Tuttle, Sarah and Zeimann, Gregory R. (2022) Lyα Halos around [O iii]-selected Galaxies in HETDEX. The Astrophysical Journal Letters, 934 (2). L26. ISSN 2041-8205

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Official URL: https://doi.org/10.3847/2041-8213/ac82e5

Abstract

We present extended Lyα emission out to 800 kpc of 1034 [O iii]-selected galaxies at redshifts 1.9 < z < 2.35 using the Hobby–Eberly Telescope Dark Energy Experiment. The locations and redshifts of the galaxies are taken from the 3D-HST survey. The median-stacked surface brightness profile of the Lyα emission of the [O iii]-selected galaxies agrees well with that of 968 bright Lyα-emitting galaxies (LAEs) at r > 40 kpc from the galaxy centers. The surface brightness in the inner parts (r < 10 kpc) around the [O iii]-selected galaxies, however, is 10 times fainter than that of the LAEs. Our results are consistent with the notion that photons dominating the outer regions of the Lyα halos are not produced in the central galaxies but originate outside of them.

Item Type:	Article
Subjects:	Open Research Librarians > Physics and Astronomy
Depositing User:	Unnamed user with email support@open.researchlibrarians.com
Date Deposited:	03 May 2023 07:44
Last Modified:	11 Mar 2024 05:11
URI:	http://stm.e4journal.com/id/eprint/750

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