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dc.contributor.authorJones, Garethen
dc.contributor.authorBéthermin, Men
dc.contributor.authorFudamoto, Yen
dc.contributor.authorGinolfi, Men
dc.contributor.authorCapak, Pen
dc.contributor.authorCassata, Pen
dc.contributor.authorFaisst, Aen
dc.contributor.authorLe Fèvre, Oen
dc.contributor.authorSchaerer, Den
dc.contributor.authorSilverman, JDen
dc.contributor.authorYan, Len
dc.contributor.authorBardelli, Sen
dc.contributor.authorBoquien, Men
dc.contributor.authorCimatti, Aen
dc.contributor.authorDessauges-Zavadsky, Men
dc.contributor.authorGiavalisco, Men
dc.contributor.authorGruppioni, Cen
dc.contributor.authorIbar, Een
dc.contributor.authorKhusanova, Yen
dc.contributor.authorKoekemoer, AMen
dc.contributor.authorLemaux, BCen
dc.contributor.authorLoiacono, Fen
dc.contributor.authorMaiolino, Robertoen
dc.contributor.authorOesch, PAen
dc.contributor.authorPozzi, Fen
dc.contributor.authorRiechers, Den
dc.contributor.authorRodighiero, Gen
dc.contributor.authorTalia, Men
dc.contributor.authorVallini, Len
dc.contributor.authorVergani, Den
dc.contributor.authorZamorani, Gen
dc.contributor.authorZucca, Een
dc.date.accessioned2019-11-28T00:31:39Z
dc.date.available2019-11-28T00:31:39Z
dc.date.issued2020-01-01en
dc.identifier.issn1745-3925
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/299402
dc.description.abstractWe report the detection of [CII]158um emission from a system of three closely-separated sources in the COSMOS field at z~4.56, as part of the ALMA Large Program to INvestigate CII at Early times (ALPINE). The two dominant sources are closely associated, both spatially (1.6"~11kpc) and in velocity (~100km/s), while the third source is slightly more distant (2.8"~18kpc, ~300km/s). The second strongest source features a slight velocity gradient, while no significant velocity gradient is seen in the other two sources. Using the observed [CII] luminosities, we derive a total log(SFR_[CII]/[Msol/year])=2.8+/-0.2, which may be split into contributions of 59%, 31%, and 10% from the central, east, and west sources, respectively. Comparison of these [CII] detections to recent zoom-in cosmological simulations suggests an ongoing major merger. We are thus witnessing a system in a major phase of mass build-up by merging, including an on-going major merger and an upcoming minor merger, which is expected to end up in a single massive galaxy by z~2.5.
dc.description.sponsorshipERC Advanced Grant 695671 “QUENCH"
dc.publisherOxford University Press
dc.rightsAll rights reserved
dc.titleThe ALPINE-ALMA [C II] survey: A triple merger at z ∼ 4.56en
dc.typeArticle
prism.endingPageL23
prism.issueIdentifier1en
prism.publicationDate2020en
prism.publicationNameMonthly Notices of the Royal Astronomical Society: Lettersen
prism.startingPageL18
prism.volume491en
dc.identifier.doi10.17863/CAM.46471
dcterms.dateAccepted2019-10-03en
rioxxterms.versionofrecord10.1093/mnrasl/slz154en
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-01-01en
dc.contributor.orcidJones, Gareth [0000-0002-0267-9024]
dc.contributor.orcidMaiolino, Roberto [0000-0002-4985-3819]
dc.identifier.eissn1745-3933
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idSTFC (ST/M001172/1)
pubs.funder-project-idECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (695671)


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