The Environments of Green Pea Galaxies. I. The KISS Sample

Brunker, Samantha W.; Salzer, John J.; Kimsey-Miller, Brooke; Cousins, Bryce

doi:10.3847/1538-4357/ac469f

Title: The Environments of Green Pea Galaxies. I. The KISS Sample

Journal Article · 17 February 2022 · The Astrophysical Journal

DOI: https://doi.org/10.3847/1538-4357/ac469f · OSTI ID:1983222

^[1];

^[1]; Kimsey-Miller, Brooke ^[1];

^[2]

Indiana Univ., Bloomington, IN (United States)
Pennsylvania State Univ., University Park, PA (United States)

We present environmental analyses for 13 KPNO International Spectroscopic Survey Green Pea (GP) galaxies. These galaxies were discovered via their strong [O ιιι] emission in the redshift range 0.29 < z < 0.42, and they are undergoing a major burst of star formation. A primary goal of this study is to understand what role the environment plays in driving the current star formation activity. By studying the environments around these extreme star-forming galaxies, we can learn more about what triggers their star formation processes and how they fit into the narrative of galaxy evolution. Using the Hydra multifiber spectrograph on the WIYN 3.5 m telescope, we mapped out the galaxy distribution around each of the GPs (out to ~15 Mpc at the redshifts of the targets). Using three density analysis methodologies chosen for their compatibility with the geometry of our redshift survey, we categorized the galaxian densities of the GPs into different density regimes. We find that the GPs in our sample tend to be located in low-density environments. We find no correlation between the density and the SFRs seen in the GPs. We conclude that the environments the GPs are found in are likely not the driving factor behind their extreme star formation activity.

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Research Organization:: US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)

Sponsoring Organization:: National Science Foundation (NSF); USDOE

OSTI ID:: 1983222

Journal Information:: The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 2 Vol. 926; ISSN 0004-637X

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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