J/A+A/628/A104ivo://CDS.VizieR/J/A+A/628/A104doi:10.26093/cds/vizier.36280104CDSBrisbin D.Aravena M.Daddi E.Dannerbauer H.Decarli R.,Gonzalez Lopez J.Riechers D.Wagg J.2019-08-21T11:46:26Z2019-08-13T09:03:16ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyradio-spectroscopyWe have used the Plateau De Bure Interferometer to observe multiple CO and neutral carbon transitions in a z=2.2 main sequence disk galaxy, BX610. Our observation of CO(7-6), CO(4-3) and both far infrared [CI] lines complements previous observations of H-alpha and low-J CO, and reveal a galaxy that is vigorously forming stars with UV fields, (Log(G/G_0_)<3.25), less extreme than local ULIRGs or most starbursting submillimeter galaxies in the early universe. Our observations allow new independent estimates of the cold gas mass which indicate M_gas_~2x10^11^M_{sun}_, and suggest a modestly larger alpha_CO value of ~8.2. The corresponding gas depletion timescale is ~1.5Gyr. In addition to gas of modest density (Log(n[cm^-3^])<3) heated by star formation, BX610 shows evidence for a significant second gas component responsible for the strong high-J CO emission. This second component might either be a high density molecular gas component heated by star formation in a typical photodissociation region, or it could be molecular gas excited by low velocity C shocks. The CO(7-6) to far infrared luminosity ratio we observe is significantly higher than typical star forming galaxies and suggests that CO(7-6) is not a reliable star formation tracer in this galaxy.2019A&A...628A.104Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/628/A104CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/628/A104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/628/A104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/628/A104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/628/A104https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/628/A104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/628/A104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapMillimeterdefaultJ/A+A/628/A104/co43CO(4-3) spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqObserved frequencyGHzem.freqfloatFdensFlux densitymJy/beamphot.flux.densityfloatJ/A+A/628/A104/ci10[CI](1-0) spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqObserved frequencyGHzem.freqfloatFdensFlux densitymJy/beamphot.flux.densityfloatJ/A+A/628/A104/250ghzSpectrum covering the CO(7-6) and [CI](2-1) emission linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqObserved frequencyGHzem.freqfloatFdensFlux densitymJy/beamphot.flux.densityfloat