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dc.contributor.authorFu, Hai
dc.contributor.authorHennawi, J. F.
dc.contributor.authorProchaska, J. Xavier
dc.contributor.authorMutel, R.
dc.contributor.authorCasey, C.
dc.contributor.authorCooray, A.
dc.contributor.authorKereš, D.
dc.contributor.authorZhang, Z.-Y.
dc.contributor.authorClements, D.
dc.contributor.authorIsbell, J.
dc.contributor.authorLang, C.
dc.contributor.authorMcGinnis, D.
dc.contributor.authorMichałowski, M. J.
dc.contributor.authorMooley, K.
dc.contributor.authorPerley, D.
dc.contributor.authorStockton, A.
dc.contributor.authorThompson, D.
dc.date.accessioned2017-06-06T00:02:47Z
dc.date.available2017-06-06T00:02:47Z
dc.date.issued2016-11-15
dc.identifier.citationTHE CIRCUMGALACTIC MEDIUM OF SUBMILLIMETER GALAXIES. I. FIRST RESULTS FROM A RADIO-IDENTIFIED SAMPLE 2016, 832 (1):52 The Astrophysical Journalen
dc.identifier.issn1538-4357
dc.identifier.doi10.3847/0004-637X/832/1/52
dc.identifier.urihttp://hdl.handle.net/10150/623949
dc.description.abstractWe present the first results from an ongoing survey to characterize the circumgalactic medium (CGM) of massive high-redshift galaxies detected as submillimeter galaxies (SMGs). We constructed a parent sample of 163 SMGQSO pairs with separations less than similar to 36" by cross-matching far-infrared-selected galaxies from Herschel with spectroscopically confirmed QSOs. The Herschel sources were selected to match the properties of the SMGs. We determined the sub-arcsecond positions of six Herschel sources with the Very Large Array and obtained secure redshift identification for three of those with near-infrared spectroscopy. The QSO sightlines probe transverse proper distances of 112, 157, and 198. kpc at foreground redshifts of 2.043, 2.515, and 2.184, respectively, which are comparable to the virial radius of the similar to 10(13) M circle dot halos expected to host SMGs. High-quality absorption-line spectroscopy of the QSOs reveals systematically strong H I Ly alpha absorption around all three SMGs, with rest-frame equivalent widths of similar to 2-3 A. However, none of the three absorbers exhibit compelling evidence for optically thick H I gas or metal absorption, in contrast to the dominance of strong neutral absorbers in the CGM of luminous z similar to 2 QSOs. The low covering factor of optically thick H I gas around SMGs tentatively indicates that SMGs may not have as prominent cool gas reservoirs in their halos as the coeval QSOs and that they may inhabit less massive halos than previously thought.
dc.description.sponsorshipNSF through the NRAO [GSSP SOSPA3-016]; NSF [AST-1614326, AST-1010004, AST-1109452, AST-1109447, AST-1412981, AST-1313319, AST-1412153]; NASA JPL [1495624]; University of Iowa; NASA [NNX16AF39G, NNX16AF38G]; University of California, San Diego; European Research Council [321302]; NASA Herschel Science Center/JPL; W.M. Keck Foundationen
dc.language.isoenen
dc.publisherIOP PUBLISHING LTDen
dc.relation.urlhttp://stacks.iop.org/0004-637X/832/i=1/a=52?key=crossref.78f55c3ff6e2828d961723e84505c898en
dc.rights© 2016. The American Astronomical Society. All rights reserved.en
dc.subjectgalaxiesen
dc.subjecthalos intergalactic mediumen
dc.subjectquasarsen
dc.subjectabsorption linesen
dc.titleTHE CIRCUMGALACTIC MEDIUM OF SUBMILLIMETER GALAXIES. I. FIRST RESULTS FROM A RADIO-IDENTIFIED SAMPLEen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Large Binocular Telescope Observen
dc.identifier.journalThe Astrophysical Journalen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-15T08:57:28Z
html.description.abstractWe present the first results from an ongoing survey to characterize the circumgalactic medium (CGM) of massive high-redshift galaxies detected as submillimeter galaxies (SMGs). We constructed a parent sample of 163 SMGQSO pairs with separations less than similar to 36" by cross-matching far-infrared-selected galaxies from Herschel with spectroscopically confirmed QSOs. The Herschel sources were selected to match the properties of the SMGs. We determined the sub-arcsecond positions of six Herschel sources with the Very Large Array and obtained secure redshift identification for three of those with near-infrared spectroscopy. The QSO sightlines probe transverse proper distances of 112, 157, and 198. kpc at foreground redshifts of 2.043, 2.515, and 2.184, respectively, which are comparable to the virial radius of the similar to 10(13) M circle dot halos expected to host SMGs. High-quality absorption-line spectroscopy of the QSOs reveals systematically strong H I Ly alpha absorption around all three SMGs, with rest-frame equivalent widths of similar to 2-3 A. However, none of the three absorbers exhibit compelling evidence for optically thick H I gas or metal absorption, in contrast to the dominance of strong neutral absorbers in the CGM of luminous z similar to 2 QSOs. The low covering factor of optically thick H I gas around SMGs tentatively indicates that SMGs may not have as prominent cool gas reservoirs in their halos as the coeval QSOs and that they may inhabit less massive halos than previously thought.


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