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A Tale of Two Clusters: An Analysis of Gas-phase Metallicity and Nebular Gas Conditions in Proto-cluster Galaxies at z similar to 2

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dc.contributor.authorAlcorn, Leo Y.
dc.contributor.authorGupta, Anshu
dc.contributor.authorTran, Kim-Vy
dc.contributor.authorKacprzak, Glenn
dc.contributor.authorYuan, Tiantian
dc.contributor.authorCohn, Jonathan H.
dc.contributor.authorForrest, Ben
dc.contributor.authorGlazebrook, Karl
dc.contributor.authorHarshan, Anishya
dc.contributor.authorKewley, Lisa
dc.contributor.authorLabbe, Ivo
dc.contributor.authorNanayakkara, Themiya
dc.date.accessioned2022-03-30T00:07:45Z
dc.date.issued2019
dc.date.updated2022-06-26T08:17:28Z
dc.description.abstractThe ZFIRE survey has spectroscopically confirmed two proto-clusters using the MOSFIRE instrument on Keck I: one at z = 2.095 in COSMOS and another at z = 1.62 in UKIRT Infrared Deep Sky Survey (UDS). Here, we use an updated ZFIRE data set to derive the properties of ionized gas regions of proto-cluster galaxies by extracting fluxes from emission lines Hβ 4861 Å, [O III] 5007 Å, Hα 6563 Å, [N II] 6585 Å, and [S II] 6716,6731 Å. We measure gas-phase metallicity of members in both proto-clusters using two indicators, including a strong-line indicator relatively independent of the ionization parameter and electron density. Proto-cluster and field galaxies in both UDS and COSMOS lie on the same Mass–Metallicity Relation with both metallicity indicators. We compare our results to recent IllustrisTNG results, which report no significant gas-phase metallicity offset between protocluster and field galaxies until z = 1.5. This is in agreement with our observed metallicities, where no offset is measured between proto-cluster and field populations. We measure tentative evidence from stacked spectra that indicate UDS high-mass proto-cluster and field galaxies have differing [O III]/Hβ ratios; however, these results are dependent on the sample size of the high-mass stacks.
dc.description.sponsorshipThis work is supported by the National Science Foundation under grant #1410728. G.G.K. acknowledges the support of the Australian Research Council through the Discovery Project DP170103470. C.M.S.S. acknowledges funding through the H2020 ERC Consolidator grant 683184.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0004-637Xen_AU
dc.identifier.urihttp://hdl.handle.net/1885/262770
dc.language.isoen_AUen_AU
dc.publisherIOP Publishing
dc.relationhttp://purl.org/au-research/grants/arc/DP170103470
dc.rights© 2019. The American Astronomical Society
dc.sourceThe Astrophysical Journal
dc.subjectgalaxies: clusters: general
dc.subjectgalaxies: evolution
dc.subjectgalaxies: high-redshift
dc.titleA Tale of Two Clusters: An Analysis of Gas-phase Metallicity and Nebular Gas Conditions in Proto-cluster Galaxies at z similar to 2
dc.typeJournal article
local.bibliographicCitation.issue153en_AU
local.bibliographicCitation.lastpage11en_AU
local.bibliographicCitation.startpage1en_AU
local.contributor.affiliationAlcorn, Leo Y., Texas A&M Universityen_AU
local.contributor.affiliationGupta, Anshu, University of New South Walesen_AU
local.contributor.affiliationTran, Kim-Vy, Texas A&M Universityen_AU
local.contributor.affiliationKacprzak, Glenn, Swinburne University of Technologyen_AU
local.contributor.affiliationYuan, Tiantian, Swinburne University of Technologyen_AU
local.contributor.affiliationCohn, Jonathan H, Texas A&M Universityen_AU
local.contributor.affiliationForrest, Ben, University of Californiaen_AU
local.contributor.affiliationGlazebrook, Karl, Swinburne University of Technologyen_AU
local.contributor.affiliationHarshan, Anishya, University of New South Walesen_AU
local.contributor.affiliationKewley, Lisa, College of Science, ANUen_AU
local.contributor.affiliationLabbe, Ivo, Swinburne University of Technologyen_AU
local.contributor.affiliationNanayakkara, Themiya, Leiden Universityen_AU
local.contributor.authoruidKewley, Lisa, u9415124en_AU
local.description.embargo2099-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor020103 - Cosmology and Extragalactic Astronomyen_AU
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciencesen_AU
local.identifier.ariespublicationu5786633xPUB1622en_AU
local.identifier.citationvolume883en_AU
local.identifier.doi10.3847/1538-4357/ab3b0cen_AU
local.identifier.scopusID2-s2.0-85073694989
local.identifier.thomsonIDWOS:000498390600012
local.publisher.urlhttp://iopscience.iop.org/0004-637Xen_AU
local.type.statusPublished Versionen_AU

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