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dc.contributor.authorZhang, C
dc.contributor.authorPeng, Y
dc.contributor.authorHo, LC
dc.contributor.authorMaiolino, R
dc.contributor.authorDekel, A
dc.contributor.authorGuo, Q
dc.contributor.authorMannucci, F
dc.contributor.authorLi, D
dc.contributor.authorYuan, F
dc.contributor.authorRenzini, A
dc.contributor.authorDou, J
dc.contributor.authorGuo, K
dc.contributor.authorMan, Z
dc.contributor.authorLi, Q
dc.date.accessioned2019-12-11T00:30:09Z
dc.date.available2019-12-11T00:30:09Z
dc.date.issued2019
dc.identifier.issn2041-8205
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/299673
dc.description.abstractThe massive galaxy population above the characteristic Schechter mass M*~10^10.6 Msun contributes to about half of the total stellar mass in the local Universe. These massive galaxies usually reside in hot dark matter haloes above the critical shock-heating mass ~10^12 Msun, where the external cold gas supply to these galaxies is expected to be suppressed. When galaxies run out of their cold gas reservoir, they become dead and quiescent. Therefore, massive quiescent galaxies living in hot haloes are commonly believed to be gas-poor. Based on the data from SDSS, ALFALFA, GASS and COLD GASS surveys, here we show that the vast majority of the massive, quiescent, central disk galaxies in the nearby Universe have a remarkably large amount of cold atomic hydrogen gas, surprisingly similar to star-forming galaxies. Both star-forming and quiescent disk galaxies show identical symmetric double-horn HI spectra, indicating similar regularly rotating HI disks. Relative to their star-forming counterparts, massive quiescent central disk galaxies are quenched because of their significantly reduced molecular gas content, lower dust content, and lower star formation efficiency. Our findings reveal a new picture, which clearly demonstrates the detailed star-formation quenching process in massive galaxies and provides a stringent constraint on the physical mechanism of quenching.
dc.publisherAmerican Astronomical Society
dc.rightsAll rights reserved
dc.titleNearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir
dc.typeArticle
prism.issueIdentifier2
prism.publicationDate2019
prism.publicationNameAstrophysical Journal Letters
prism.volume884
dc.identifier.doi10.17863/CAM.46743
rioxxterms.versionofrecord10.3847/2041-8213/ab4ae4
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-10-20
dc.contributor.orcidZhang, C [0000-0001-6469-1582]
dc.contributor.orcidHo, LC [0000-0001-6947-5846]
dc.contributor.orcidMaiolino, R [0000-0002-4985-3819]
dc.contributor.orcidDekel, A [0000-0003-4174-0374]
dc.contributor.orcidMannucci, F [0000-0002-4803-2381]
dc.contributor.orcidLi, D [0000-0003-3010-7661]
dc.contributor.orcidYuan, F [0000-0003-3564-6437]
dc.contributor.orcidRenzini, A [0000-0002-7093-7355]
dc.contributor.orcidGuo, K [0000-0001-6103-2821]
dc.contributor.orcidMan, Z [0000-0001-9463-2444]
dc.contributor.orcidLi, Q [0000-0002-3119-9003]
dc.identifier.eissn2041-8213
rioxxterms.typeJournal Article/Review
pubs.funder-project-idScience and Technology Facilities Council (ST/M001172/1)
pubs.funder-project-idEuropean Research Council (695671)
cam.issuedOnline2019-10-18


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