A dense, solar metallicity ISM in the z = 4.2 dusty star-forming galaxy SPT 0418-47

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dc.contributor.authorDe Breuck, Carlos
dc.contributor.authorWeiß, Axel
dc.contributor.authorBéthermin, Matthieu
dc.contributor.authorCunningham, Daniel
dc.contributor.authorApostolovski, Yordanka
dc.contributor.authorAravena, Manuel
dc.contributor.authorArchipley, Melanie
dc.contributor.authorChapman, Scott
dc.contributor.authorChen, Chian-Chou
dc.contributor.authorFu, Jianyang
dc.contributor.authorJarugula, Sreevani
dc.contributor.authorMalkan, Matt
dc.date.accessioned2024-06-25T17:05:23Z
dc.date.available2024-06-25T17:05:23Z
dc.date.issued2019-11-01
dc.descriptionIndexación: Scopus.
dc.description.abstractWe present a study of six far-infrared fine structure lines in the z = 4.225 lensed dusty star-forming galaxy SPT 0418-47 to probe the physical conditions of its interstellar medium (ISM). In particular, we report Atacama Pathfinder EXperiment (APEX) detections of the [OI] 145 μm and [OIII] 88 μm lines and Atacama Compact Array (ACA) detections of the [NII] 122 and 205 μm lines. The [OI] 145 μm/[CII] 158 μm line ratio is ∼5× higher compared to the average of local galaxies. We interpret this as evidence that the ISM is dominated by photo-dissociation regions with high gas densities. The line ratios, and in particular those of [OIII] 88 μm and [NII] 122 μm imply that the ISM in SPT 0418-47 is already chemically enriched to nearly solar metallicity. While the strong gravitational amplification was required to detect these lines with APEX, larger samples can be observed with the Atacama Large Millimeter/submillimeter Array (ALMA), and should allow observers to determine if the dense, solar metallicity ISM is common among these highly star-forming galaxies.
dc.description.urihttps://www.aanda.org/articles/aa/pdf/2019/11/aa36169-19.pdf
dc.identifier.citationAstronomy and Astrophysics Volume 631 1 November 2019 Article number A167
dc.identifier.doi10.1051/0004-6361/201936169
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/57970
dc.language.isoen_US
dc.publisherEDP Sciences
dc.rights.licenseATRIBUCIÓN 4.0 INTERNACIONAL
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectGalaxies: high-redshift
dc.subjectGalaxies: ISM
dc.subjectSubmillimeter: galaxies
dc.subjectSubmillimeter: ISM
dc.titleA dense, solar metallicity ISM in the z = 4.2 dusty star-forming galaxy SPT 0418-47
dc.typeArtículo
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