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dc.contributor.authorFranco, M.
dc.contributor.authorCoppin, K. E. K.
dc.contributor.authorGeach, J. E.
dc.contributor.authorKobayashi, C.
dc.contributor.authorChapman, S. C.
dc.contributor.authorYang, C.
dc.contributor.authorGonzález-Alfonso, E.
dc.contributor.authorSpilker, J. S.
dc.contributor.authorCooray, A.
dc.contributor.authorMichałowski, M. J.
dc.date.accessioned2021-11-08T12:15:02Z
dc.date.available2021-11-08T12:15:02Z
dc.date.issued2021-11-04
dc.identifier.citationFranco , M , Coppin , K E K , Geach , J E , Kobayashi , C , Chapman , S C , Yang , C , González-Alfonso , E , Spilker , J S , Cooray , A & Michałowski , M J 2021 , ' The ramp-up of interstellar medium enrichment at z >4 ' , Nature Astronomy , vol. 5 . https://doi.org/10.1038/s41550-021-01515-9
dc.identifier.issn2397-3366
dc.identifier.otherPURE: 26276789
dc.identifier.otherPURE UUID: f7047954-4c85-4dfd-8054-5cd0aee1f281
dc.identifier.otherArXiv: http://arxiv.org/abs/2111.03074v1
dc.identifier.otherORCID: /0000-0002-4343-0487/work/103099847
dc.identifier.otherORCID: /0000-0002-0729-2988/work/103099946
dc.identifier.otherORCID: /0000-0002-3560-8599/work/103100093
dc.identifier.otherScopus: 85118656561
dc.identifier.urihttp://hdl.handle.net/2299/25174
dc.description© The Author(s), under exclusive licence to Springer Nature Limited 2021. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1038/s41550-021-01515-9
dc.description.abstractFluorine is one of the most interesting elements for nuclear and stellar astrophysics 1,2. Fluorine abundance was first measured for stars other than the Sun in 1992 1, then for a handful of metal-poor stars 3, which are likely to have formed in the early Universe. The main production sites of fluorine are under debate and include asymptotic giant branch stars, the ν-process in core-collapse supernovae, and Wolf–Rayet stars 4–10. Due to the difference in the mass and lifetime of progenitor stars, high-redshift observations of fluorine can help constrain the mechanism of fluorine production in massive galaxies. Here, we report the detection of HF (signal-to-noise ratio of 8) in absorption in a gravitationally lensed dusty star-forming galaxy at redshift z = 4.4 with N HF/NH2 as high as ~2 × 10 −9, indicating a very quick ramp-up of the chemical enrichment in this high-z galaxy. At z = 4.4, asymptotic giant branch stars of a few solar masses are very unlikely to dominate the enrichment. Instead, we show that Wolf–Rayet stars are required to produce the observed fluorine abundance at this time, with other production mechanisms becoming important at later times. These observations therefore provide an insight into the underlying processes driving the ramp-up phase of chemical enrichment alongside rapid stellar mass assembly in a young massive galaxy.en
dc.format.extent7
dc.language.isoeng
dc.relation.ispartofNature Astronomy
dc.rightsEmbargoed
dc.subjectastro-ph.GA
dc.subjectAstronomy and Astrophysics
dc.titleThe ramp-up of interstellar medium enrichment at z>4en
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionCentre of Data Innovation Research
dc.contributor.institutionCentre for Climate Change Research
dc.description.statusPeer reviewed
dc.date.embargoedUntil2022-05-04
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85118656561&partnerID=8YFLogxK
dc.identifier.urlhttps://arxiv.org/pdf/2111.03074.pdf
dc.relation.schoolSchool of Physics, Engineering & Computer Science
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2021-11-04
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1038/s41550-021-01515-9
rioxxterms.licenseref.uriUnspecified
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeEmbargoed


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