The Neon Gap: Probing Ionization with Dwarf Galaxies at z ∼ 1

John Pharo; Yicheng Guo; David C. Koo; John C. Forbes; Puragra Guhathakurta

doi:10.3847/2041-8213/acb34d

The Astrophysical Journal Letters (Jan 2023)

The Neon Gap: Probing Ionization with Dwarf Galaxies at z ∼ 1

John Pharo,
Yicheng Guo,
David C. Koo,
John C. Forbes,
Puragra Guhathakurta

Affiliations

John Pharo: ORCiD; Department of Physics and Astronomy, University of Missouri , Columbia, MO 65211, USA ; [email protected]
Yicheng Guo: ORCiD; Department of Physics and Astronomy, University of Missouri , Columbia, MO 65211, USA ; [email protected]
David C. Koo: ORCiD; UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA, USA; University of California , Santa Cruz, CA, USA
John C. Forbes: ORCiD; Center for Computational Astrophysics at the Flatiron Institute , New York, NY, USA
Puragra Guhathakurta: ORCiD; UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA, USA; University of California , Santa Cruz, CA, USA

DOI: https://doi.org/10.3847/2041-8213/acb34d
Journal volume & issue: Vol. 946, no. 1
p. L5

Abstract

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We present measurements of [Ne iii ] λ 3869 emission in z ∼ 1 low-mass galaxies taken from the Keck/DEIMOS spectroscopic surveys HALO7D and DEEPwinds. We identify 167 individual galaxies with significant [Ne iii ] emission lines, including 112 “dwarf” galaxies with $\mathrm{log}({M}_{\star }/{M}_{\odot })\lt \,9.5$ , with 0.3 7 galaxies identified in JWST Early Release Observations, finding four HALO7D dwarfs with similar size, metallicity, and star formation properties.

Published in The Astrophysical Journal Letters

ISSN: 2041-8205 (Print); 2041-8213 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/2041-8205

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