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dc.contributor.authorDoherty, M. J.
dc.contributor.authorGeach, J. E.
dc.contributor.authorIvison, R. J.
dc.contributor.authorDye, S.
dc.date.accessioned2021-01-28T00:09:30Z
dc.date.available2021-01-28T00:09:30Z
dc.date.issued2020-12-23
dc.identifier.citationDoherty , M J , Geach , J E , Ivison , R J & Dye , S 2020 , ' [NII] fine-structure emission at 122 and 205um in a galaxy at z=2.6: a globally dense star-forming interstellar medium ' , The Astrophysical Journal , vol. 905 , no. 2 , 152 . https://doi.org/10.3847/1538-4357/abc5b9
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 22920052
dc.identifier.otherPURE UUID: c582cdcc-fab9-47af-aa7a-3fd191e59022
dc.identifier.otherArXiv: http://arxiv.org/abs/2010.15128v1
dc.identifier.otherScopus: 85098886466
dc.identifier.urihttp://hdl.handle.net/2299/23781
dc.description© 2020. The American Astronomical Society. All rights reserved.
dc.description.abstractWe present new observations with the Atacama Large Millimeter/sub-millimeter Array of the 122um and 205um fine-structure line emission of singly-ionised nitrogen in a strongly lensed starburst galaxy at z=2.6. The 122/205um [NII] line ratio is sensitive to electron density, n_e, in the ionised interstellar medium, and we use this to measure n_e~300cm^-3 averaged across the galaxy. This is over an order of magnitude higher than the Milky Way average, but comparable to localised Galactic star-forming regions. Combined with observations of the atomic carbon (CI(1-0)) and carbon monoxide (CO(4-3)) in the same system, we reveal the conditions in this intensely star-forming system. The majority of the molecular interstellar medium has been driven to high density, and the resultant conflagration of star formation produces a correspondingly dense ionised phase, presumably co-located with myriad HII regions that litter the gas-rich disk.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rightsOpen
dc.subjectastro-ph.GA
dc.subjectastro-ph.CO
dc.title[NII] fine-structure emission at 122 and 205um in a galaxy at z=2.6: a globally dense star-forming interstellar mediumen
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionCentre of Data Innovation Research
dc.contributor.institutionCentre for Climate Change Research
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Engineering & Computer Science
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2020-12-23
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/abc5b9
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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