J/A+A/631/A167ivo://CDS.VizieR/J/A+A/631/A167doi:10.26093/cds/vizier.36310167CDSDe Breuck C.Weiss A.Bethermin M.Cunningham D.Apostolovski Y.,Aravena M.Archipley M.Chapman S.Chen C.-C.Jarugula S.Malkan M.,Mangian A.Phadke K.Reuter C.Stacey G.Strandet M.Vieira J.,Vishwas A.2019-11-15T07:24:58Z2019-11-15T08:15:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesspectroscopymillimeter-astronomysubmillimeter-astronomyWe present a study of six far-infrared fine structure lines in the z=4.225 lensed dusty star-forming galaxy SPT 0418-47 (SPT-S J041839-4751.8) to probe the physical conditions of its inter stellar medium (ISM). In particular, we report Atacama Pathfinder EXperiment (APEX) detections of the [OI] 145um and [OIII] 88um lines and Atacama Compact Array (ACA) detections of the [NII] 122 and 205um lines. The [OI] 145um/[CII] 158um line ratio is ~5x 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] 88um and [NII] 122um 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.2019A&A...631A.167Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/631/A167CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/631/A167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/631/A167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/631/A167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/631/A167https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/631/A167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/631/A167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapMillimeterdefaultJ/A+A/631/A167/cii158[CII]158um spectrum of SPT-S J041839-4751.8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqSky FrequencyGHzem.freqdoubleFluxFluxmJyphot.fluxdoubleJ/A+A/631/A167/oi145[OI]145um spectrum of SPT-S J041839-4751.8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqSky FrequencyGHzem.freqdoubleFluxFluxmJyphot.fluxdoubleJ/A+A/631/A167/oiii88[OIII]88um spectrum of SPT-S J041839-4751.8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqSky FrequencyGHzem.freqdoubleFluxFluxmJyphot.fluxdoubleJ/A+A/631/A167/nii122[NII]122um spectrum of SPT-S J041839-4751.8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqSky FrequencyGHzem.freqdoubleFluxFluxmJyphot.fluxdoubleJ/A+A/631/A167/nii205[NII]205um spectrum of SPT-S J041839-4751.8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqSky FrequencyGHzem.freqdoubleFluxFluxmJyphot.fluxdouble