Galaxies of the z ∼ 2 Universe. I. Grism-selected Rest-frame Optical Emission-line Galaxies

William P. Bowman, Gregory R. Zeimann, Robin Ciardullo, Caryl Gronwall, Donald P. Schneider, Adam P. McCarron, Laurel H. Weiss, Guang Yang, Alex Hagen

Research output: Contribution to journalArticle

Abstract

Euclid, the Wide Field Infrared Survey Telescope, and the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will make emission-line selected galaxies the largest observed constituent in the z > 1 universe. However, we only have a limited understanding of the physical properties of galaxies selected via their Lyα or rest-frame optical emission lines. To address this problem, we present the basic properties of ∼2000 All-Wavelength Extended Groth Strip International Survey, Cosmological Evolution Survey, Great Observatories Origins Deep Survey-North, Great Observatories Origins Deep Survey-South, and Ultra Deep Survey galaxies identified in the redshift range 1.90 < z < 2.35 via their [O ii], Hβ, and [O iii] emission lines in the 3D-Hubble Space Telescope survey. For these z ∼ 2 galaxies, [O iii] is generally much brighter than [O ii] and Hβ, with typical rest-frame equivalent widths of several hundred Angstroms. Moreover, these strong emission-line systems span an extremely wide range of stellar mass (∼3 dex), star formation rate (∼2 dex), and [O iii] luminosity (∼2 dex). Comparing the distributions of these properties to those of continuum-selected galaxies, we find that emission-line galaxies have systematically lower stellar masses and lower optical/UV dust attenuations. These measurements lay the groundwork for an extensive comparison between these rest-frame optical emission-line galaxies and Lyα emitters identified in the HETDEX survey.

Original languageEnglish (US)
Article number152
JournalAstrophysical Journal
Volume875
Issue number2
DOIs
StatePublished - Apr 20 2019

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light emission
universe
galaxies
telescopes
stellar mass
dark energy
observatories
observatory
star formation rate
Hubble Space Telescope
energy
strip
emitters
physical property
physical properties
experiment
dust
attenuation
luminosity
continuums

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Bowman, William P. ; Zeimann, Gregory R. ; Ciardullo, Robin ; Gronwall, Caryl ; Schneider, Donald P. ; McCarron, Adam P. ; Weiss, Laurel H. ; Yang, Guang ; Hagen, Alex. / Galaxies of the z ∼ 2 Universe. I. Grism-selected Rest-frame Optical Emission-line Galaxies. In: Astrophysical Journal. 2019 ; Vol. 875, No. 2.
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Galaxies of the z ∼ 2 Universe. I. Grism-selected Rest-frame Optical Emission-line Galaxies. / Bowman, William P.; Zeimann, Gregory R.; Ciardullo, Robin; Gronwall, Caryl; Schneider, Donald P.; McCarron, Adam P.; Weiss, Laurel H.; Yang, Guang; Hagen, Alex.

In: Astrophysical Journal, Vol. 875, No. 2, 152, 20.04.2019.

Research output: Contribution to journalArticle

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