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arXiv · 2004.13079

MOSEL: Strong [OIII]5007 \AA\ Emitting Galaxies at (3<z<4) from the ZFOURGE Survey

Kim-Vy H. Tran·Ben Forrest·Leo Y. Alcorn·Tiantian Yuan·Themiya Nanayakkara·Jonathan Cohn·Michael Cowley·Karl Glazebrook·Anshu Gupta·Glenn G. Kacprzak·Lisa Kewley·Ivo Labbe·Casey Papovich·Lee Spitler·Caroline M. S. Straatman·Adam Tomczak
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Abstract

To understand how strong emission line galaxies (ELGs) contribute to the overall growth of galaxies and star formation history of the universe, we target Strong ELGs (SELGs) from the ZFOURGE imaging survey that have blended (Hb+[OIII]) rest-frame equivalent widths of >230A and 2.5 60%, i.e. the inferred gas masses can easily fuel a starburst to double stellar masses within ~10-100 Myr. Combined with recent results using ZFOURGE, our analysis indicates that 1) strong [OIII]5007A emission signals an early episode of intense stellar growth in low mass (Mstar<0.1M*) galaxies and 2) many, if not most, galaxies at z>3 go through this starburst phase. If true, low-mass galaxies with strong [OIII]5007A emission (EW_rest>200A) may be an increasingly important source of ionizing UV radiation at z>3.

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Kim-Vy H. Tran, Ben Forrest, Leo Y. Alcorn, Tiantian Yuan, Themiya Nanayakkara, Jonathan Cohn, Michael Cowley, Karl Glazebrook, Anshu Gupta, Glenn G. Kacprzak, Lisa Kewley, Ivo Labbe, Casey Papovich, Lee Spitler, Caroline M. S. Straatman, Adam Tomczak. 2020-04-27. MOSEL: Strong [OIII]5007 \AA\ Emitting Galaxies at (3<z<4) from the ZFOURGE Survey. https://doi.org/10.3847/1538-4357/ab8cba

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