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arXiv · 2207.11098

Ly{\alpha} Halos around [O III]-Selected Galaxies in HETDEX

Maja Lujan Niemeyer·William P. Bowman·Robin Ciardullo·Max Gronke·Eiichiro Komatsu·Maximilian Fabricius·Daniel J. Farrow·Steven L. Finkelstein·Karl Gebhardt·Caryl Gronwall·Gary J. Hill·Chenxu Liu·Erin Mentuch Cooper·Donald P. Schneider·Sarah Tuttle·Gregory R. Zeimann
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Abstract

We present extended Lyman-{\alpha} (Ly{\alpha}) emission out to 800 kpc of 1034 [O III]-selected galaxies at redshifts 1.9 40 kpc from the galaxy centers. The surface brightness in the inner parts (r<10 kpc) around the [O III]-selected galaxies, however, is ten times fainter than that of the LAEs. Our results are consistent with the notion that photons dominating the outer regions of the Ly{\alpha} halos are not produced in the central galaxies but originate outside of them.

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Maja Lujan Niemeyer, William P. Bowman, Robin Ciardullo, Max Gronke, Eiichiro Komatsu, Maximilian Fabricius, Daniel J. Farrow, Steven L. Finkelstein, Karl Gebhardt, Caryl Gronwall, Gary J. Hill, Chenxu Liu, Erin Mentuch Cooper, Donald P. Schneider, Sarah Tuttle, Gregory R. Zeimann. 2022-07-22. Ly{\alpha} Halos around [O III]-Selected Galaxies in HETDEX. https://doi.org/10.3847/2041-8213%2Fac82e5

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