Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field

Adam P. McCarron; Steven L. Finkelstein; Oscar A. Chavez Ortiz; Dustin Davis; Erin Mentuch Cooper; Intae Jung; Delaney R. White; Gene C.K. Leung; Karl Gebhardt; Viviana Acquaviva; William P. Bowman; Robin Ciardullo; Eric Gawiser; Caryl Gronwall; Gary J. Hill; Wolfram Kollatschny; Martin Landriau; Chenxu Liu; Daniel N. Mock; Ariel G. Sánchez

doi:10.3847/1538-4357/ac8546

Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field

Adam P. McCarron, Steven L. Finkelstein, Oscar A. Chavez Ortiz, Dustin Davis, Erin Mentuch Cooper, Intae Jung, Delaney R. White, Gene C.K. Leung, Karl Gebhardt, Viviana Acquaviva, William P. Bowman, Robin Ciardullo, Eric Gawiser, Caryl Gronwall, Gary J. Hill, Wolfram Kollatschny, Martin Landriau, Chenxu Liu, Daniel N. Mock, Ariel G. Sánchez

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Abstract

We present the results of a stellar population analysis of 72 Lyα-emitting galaxies (LAEs) in GOODS-N at 1.9 < z < 3.5 spectroscopically identified by the Hobby−Eberly Telescope Dark Energy Experiment (HETDEX). We provide a method for connecting emission-line detections from the blind spectroscopic survey to imaging counterparts, a crucial tool needed as HETDEX builds a massive database of ∼1 million Lyα detections. Using photometric data spanning as many as 11 filters covering 0.4 < λ (μm) < 4.5 from the Hubble Space Telescope and Spitzer Space Telescope, we study the objects’ global properties and explore which properties impact the strength of Lyα emission. We measure a median stellar mass of 0.8 − 0.5 + 2.9 × 10 9 M ⊙ and conclude that the physical properties of HETDEX spectroscopically selected LAEs are comparable to LAEs selected by previous deep narrowband studies. We find that stellar mass and star formation rate correlate strongly with the Lyα equivalent width. We then use a known sample of z > 7 LAEs to perform a protostudy of predicting Lyα emission from galaxies in the epoch of reionization, finding agreement at the 1σ level between prediction and observation for the majority of strong emitters.

Original language	English (US)
Article number	131
Journal	Astrophysical Journal
Volume	936
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ac8546
State	Published - Sep 1 2022

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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McCarron, A. P., Finkelstein, S. L., Chavez Ortiz, O. A., Davis, D., Cooper, E. M., Jung, I., White, D. R., Leung, G. C. K., Gebhardt, K., Acquaviva, V., Bowman, W. P., Ciardullo, R., Gawiser, E., Gronwall, C., Hill, G. J., Kollatschny, W., Landriau, M., Liu, C., Mock, D. N., & Sánchez, A. G. (2022). Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field. Astrophysical Journal, 936(2), Article 131. https://doi.org/10.3847/1538-4357/ac8546

@article{6e5fcddc78be4f30b71b90c0b575b3f0,

title = "Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field",

abstract = "We present the results of a stellar population analysis of 72 Lyα-emitting galaxies (LAEs) in GOODS-N at 1.9 < z < 3.5 spectroscopically identified by the Hobby−Eberly Telescope Dark Energy Experiment (HETDEX). We provide a method for connecting emission-line detections from the blind spectroscopic survey to imaging counterparts, a crucial tool needed as HETDEX builds a massive database of ∼1 million Lyα detections. Using photometric data spanning as many as 11 filters covering 0.4 < λ (μm) < 4.5 from the Hubble Space Telescope and Spitzer Space Telescope, we study the objects{\textquoteright} global properties and explore which properties impact the strength of Lyα emission. We measure a median stellar mass of 0.8 − 0.5 + 2.9 × 10 9 M ⊙ and conclude that the physical properties of HETDEX spectroscopically selected LAEs are comparable to LAEs selected by previous deep narrowband studies. We find that stellar mass and star formation rate correlate strongly with the Lyα equivalent width. We then use a known sample of z > 7 LAEs to perform a protostudy of predicting Lyα emission from galaxies in the epoch of reionization, finding agreement at the 1σ level between prediction and observation for the majority of strong emitters.",

author = "McCarron, {Adam P.} and Finkelstein, {Steven L.} and {Chavez Ortiz}, {Oscar A.} and Dustin Davis and Cooper, {Erin Mentuch} and Intae Jung and White, {Delaney R.} and Leung, {Gene C.K.} and Karl Gebhardt and Viviana Acquaviva and Bowman, {William P.} and Robin Ciardullo and Eric Gawiser and Caryl Gronwall and Hill, {Gary J.} and Wolfram Kollatschny and Martin Landriau and Chenxu Liu and Mock, {Daniel N.} and S{\'a}nchez, {Ariel G.}",

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

year = "2022",

month = sep,

day = "1",

doi = "10.3847/1538-4357/ac8546",

language = "English (US)",

volume = "936",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

McCarron, AP, Finkelstein, SL, Chavez Ortiz, OA, Davis, D, Cooper, EM, Jung, I, White, DR, Leung, GCK, Gebhardt, K, Acquaviva, V, Bowman, WP, Ciardullo, R, Gawiser, E, Gronwall, C, Hill, GJ, Kollatschny, W, Landriau, M, Liu, C, Mock, DN & Sánchez, AG 2022, 'Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field', Astrophysical Journal, vol. 936, no. 2, 131. https://doi.org/10.3847/1538-4357/ac8546

TY - JOUR

T1 - Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field

AU - McCarron, Adam P.

AU - Finkelstein, Steven L.

AU - Chavez Ortiz, Oscar A.

AU - Davis, Dustin

AU - Cooper, Erin Mentuch

AU - Jung, Intae

AU - White, Delaney R.

AU - Leung, Gene C.K.

AU - Gebhardt, Karl

AU - Acquaviva, Viviana

AU - Bowman, William P.

AU - Ciardullo, Robin

AU - Gawiser, Eric

AU - Gronwall, Caryl

AU - Hill, Gary J.

AU - Kollatschny, Wolfram

AU - Landriau, Martin

AU - Liu, Chenxu

AU - Mock, Daniel N.

AU - Sánchez, Ariel G.

PY - 2022/9/1

Y1 - 2022/9/1

N2 - We present the results of a stellar population analysis of 72 Lyα-emitting galaxies (LAEs) in GOODS-N at 1.9 < z < 3.5 spectroscopically identified by the Hobby−Eberly Telescope Dark Energy Experiment (HETDEX). We provide a method for connecting emission-line detections from the blind spectroscopic survey to imaging counterparts, a crucial tool needed as HETDEX builds a massive database of ∼1 million Lyα detections. Using photometric data spanning as many as 11 filters covering 0.4 < λ (μm) < 4.5 from the Hubble Space Telescope and Spitzer Space Telescope, we study the objects’ global properties and explore which properties impact the strength of Lyα emission. We measure a median stellar mass of 0.8 − 0.5 + 2.9 × 10 9 M ⊙ and conclude that the physical properties of HETDEX spectroscopically selected LAEs are comparable to LAEs selected by previous deep narrowband studies. We find that stellar mass and star formation rate correlate strongly with the Lyα equivalent width. We then use a known sample of z > 7 LAEs to perform a protostudy of predicting Lyα emission from galaxies in the epoch of reionization, finding agreement at the 1σ level between prediction and observation for the majority of strong emitters.

AB - We present the results of a stellar population analysis of 72 Lyα-emitting galaxies (LAEs) in GOODS-N at 1.9 < z < 3.5 spectroscopically identified by the Hobby−Eberly Telescope Dark Energy Experiment (HETDEX). We provide a method for connecting emission-line detections from the blind spectroscopic survey to imaging counterparts, a crucial tool needed as HETDEX builds a massive database of ∼1 million Lyα detections. Using photometric data spanning as many as 11 filters covering 0.4 < λ (μm) < 4.5 from the Hubble Space Telescope and Spitzer Space Telescope, we study the objects’ global properties and explore which properties impact the strength of Lyα emission. We measure a median stellar mass of 0.8 − 0.5 + 2.9 × 10 9 M ⊙ and conclude that the physical properties of HETDEX spectroscopically selected LAEs are comparable to LAEs selected by previous deep narrowband studies. We find that stellar mass and star formation rate correlate strongly with the Lyα equivalent width. We then use a known sample of z > 7 LAEs to perform a protostudy of predicting Lyα emission from galaxies in the epoch of reionization, finding agreement at the 1σ level between prediction and observation for the majority of strong emitters.

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UR - http://www.scopus.com/inward/citedby.url?scp=85138147893&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/ac8546

DO - 10.3847/1538-4357/ac8546

M3 - Article

AN - SCOPUS:85138147893

SN - 0004-637X

VL - 936

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 131

ER -

Stellar Populations of Lyα-emitting Galaxies in the HETDEX Survey. I. An Analysis of LAEs in the GOODS-N Field

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