dc.contributor.author | Doherty, M. J. | |
dc.contributor.author | Geach, J. E. | |
dc.contributor.author | Ivison, R. J. | |
dc.contributor.author | Dye, S. | |
dc.date.accessioned | 2021-01-28T00:09:30Z | |
dc.date.available | 2021-01-28T00:09:30Z | |
dc.date.issued | 2020-12-23 | |
dc.identifier.citation | Doherty , 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.issn | 0004-637X | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2010.15128v1 | |
dc.identifier.uri | http://hdl.handle.net/2299/23781 | |
dc.description | © 2020. The American Astronomical Society. All rights reserved. | |
dc.description.abstract | We 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.format.extent | 1157702 | |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | astro-ph.GA | |
dc.subject | astro-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 medium | en |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.contributor.institution | Centre of Data Innovation Research | |
dc.contributor.institution | Centre for Climate Change Research (C3R) | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.3847/1538-4357/abc5b9 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |