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Spectroscopically Identified Emission Line Galaxy Pairs in the WISP Survey

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dc.contributor.authorDai, Y Sophia
dc.contributor.authorMalkan, Matthew M
dc.contributor.authorTeplitz, Harry I
dc.contributor.authorScarlata, Claudia
dc.contributor.authorAlavi, Anahita
dc.contributor.authorAtek, Hakim
dc.contributor.authorBagley, Micaela
dc.contributor.authorBaronchelli, Ivano
dc.contributor.authorBattisti, Andrew
dc.contributor.authorBunker, Andrew
dc.contributor.authorHathi, Nimish P
dc.date.accessioned2024-03-21T23:17:50Z
dc.date.available2024-03-21T23:17:50Z
dc.date.issued2021
dc.date.updated2022-11-13T07:17:47Z
dc.description.abstractWe identify a sample of spectroscopically measured emission line galaxy (ELG) Pairs up to z = 1.6 from the Wide Field Camera 3 (WFC3) Infrared Spectroscopic Parallels (WISP) survey. WISP obtained slitless, near-infrared grism spectroscopy along with direct imaging in the J and H bands by observing in the pure-parallel mode with the WFC3 on board the Hubble Space Telescope. From our search of 419 WISP fields covering an area of similar to 0.5 deg(2), we find 413 ELG pair systems, mostly H (alpha) emitters. We then derive reliable star formation rates (SFRs) based on the attenuation-corrected H (alpha) fluxes. Compared to isolated galaxies, we find an average SFR enhancement of 40%-65%, which is stronger for major Pairs and Pairs with smaller velocity separations (Delta (v) < 300 km s(-1)). Based on the stacked spectra from various subsamples, we study the trends of emission line ratios in pairs, and find a general consistency with enhanced lower ionization lines. We study the pair fraction among ELGs, and find a marginally significant increase with redshift f proportional to (1 + z) (alpha) , where the power-law index alpha = 0.58 +/- 0.17 from z similar to 0.2 to similar to 1.6. The fraction of active galactic nuclei is found to be the same in the ELG Pairs as compared to the isolated ELGs.en_AU
dc.description.sponsorshipSupport for this work is also partly provided by the CASSACA and Chinese National Nature Science Foundation (NSFC) grant No. 10878003. Y.S.D. acknowledges the science research grants from NSFC grants 11933003, the National Key R&D Program of China via grant No. 2017YFA0402703, and the China Manned Space Project with No. CMS-CSST-2021-A05. A.J.B. acknowledges funding from the FirstGalaxies Advanced Grant from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation program (grant agreement No. 789056). H.A. acknowledges support from CNES.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1538-4357en_AU
dc.identifier.urihttp://hdl.handle.net/1885/316211
dc.language.isoen_AUen_AU
dc.provenanceOriginal content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_AU
dc.publisherInstitute of Physics Publishingen_AU
dc.rights© 2021. The Author(s). Published by the American Astronomical Societyen_AU
dc.rights.licenseCreative Commons Attribution 4.0 International Licenseen_AU
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_AU
dc.sourceThe Astrophysical Journalen_AU
dc.titleSpectroscopically Identified Emission Line Galaxy Pairs in the WISP Surveyen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue2en_AU
local.bibliographicCitation.lastpage14en_AU
local.bibliographicCitation.startpage1en_AU
local.contributor.affiliationDai, Y Sophia, Chinese Academy of Sciences South America Center for Astronomy (CASSACA)en_AU
local.contributor.affiliationMalkan, Matthew M, UCLA Department of Physics and Astronomyen_AU
local.contributor.affiliationTeplitz, Harry I, IPACen_AU
local.contributor.affiliationScarlata, Claudia, University of Minnesotaen_AU
local.contributor.affiliationAlavi, Anahita, California Institute of Technologyen_AU
local.contributor.affiliationAtek, Hakim, Sorbonne Universiteen_AU
local.contributor.affiliationBagley, Micaela, The University of Texas at Austinen_AU
local.contributor.affiliationBaronchelli, Ivano, Universita di Padovaen_AU
local.contributor.affiliationBattisti, Andrew, College of Science, ANUen_AU
local.contributor.affiliationBunker, Andrew, University of Oxforden_AU
local.contributor.affiliationHathi, Nimish P, Space Telescope Science Instituteen_AU
local.contributor.authoruidBattisti, Andrew, u1051743en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor510100 - Astronomical sciencesen_AU
local.identifier.absseo280120 - Expanding knowledge in the physical sciencesen_AU
local.identifier.ariespublicationa383154xPUB24297en_AU
local.identifier.citationvolume923en_AU
local.identifier.doi10.3847/1538-4357/ac2f96en_AU
local.identifier.thomsonID000734358700001
local.publisher.urlhttps://iopscience.iop.org/en_AU
local.type.statusPublished Versionen_AU

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