Lyα 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

doi:10.3847/2041-8213/ac82e5

Lyα 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 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.

Original language	English (US)
Article number	L26
Journal	Astrophysical Journal Letters
Volume	934
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ac82e5
State	Published - Aug 1 2022

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Lujan Niemeyer, M., Bowman, W. P., Ciardullo, R., Gronke, M., Komatsu, E., Fabricius, M., Farrow, D. J., Finkelstein, S. L., Gebhardt, K., Gronwall, C., Hill, G. J., Liu, C., Cooper, E. M., Schneider, D. P., Tuttle, S., & Zeimann, G. R. (2022). Lyα Halos around [O iii]-selected Galaxies in HETDEX. Astrophysical Journal Letters, 934(2), Article L26. https://doi.org/10.3847/2041-8213/ac82e5

@article{ee50e0f604714c51a10242b705d68013,

title = "Lyα Halos around [O iii]-selected Galaxies in HETDEX",

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.",

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

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = aug,

day = "1",

doi = "10.3847/2041-8213/ac82e5",

language = "English (US)",

volume = "934",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

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TY - JOUR

T1 - Lyα Halos around [O iii]-selected Galaxies in HETDEX

AU - Lujan Niemeyer, Maja

AU - Bowman, William P.

AU - Ciardullo, Robin

AU - Gronke, Max

AU - Komatsu, Eiichiro

AU - Fabricius, Maximilian

AU - Farrow, Daniel J.

AU - Finkelstein, Steven L.

AU - Gebhardt, Karl

AU - Gronwall, Caryl

AU - Hill, Gary J.

AU - Liu, Chenxu

AU - Cooper, Erin Mentuch

AU - Schneider, Donald P.

AU - Tuttle, Sarah

AU - Zeimann, Gregory R.

PY - 2022/8/1

Y1 - 2022/8/1

N2 - 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.

AB - 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.

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DO - 10.3847/2041-8213/ac82e5

M3 - Article

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SN - 2041-8205

VL - 934

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L26

ER -

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

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