J/A+A/708/A361ivo://CDS.VizieR/J/A+A/708/A361CDSMartinez-Cuadra B.Herrera-Camus R.Foerster Schreiber N.Tacconi L.,Genzel R.Liu D.Harikane Y.Jolly J.B.Naab T.Neri R.Tozzi G.,Uebler H.2026-07-10T12:19:47Z2026-04-27T09:06:27ZCDS support team

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

cds-question@unistra.frgalaxiesinterstellar-mediumradial-velocityradio-sourcesWe present observations from the Northern Extended Millimeter Array (NOEMA) of four luminous galaxies at z~6, when the Universe was less than 1Gyr old. These galaxies are detected in the [CII] 158um fine-structure line, and three also exhibit underlying dust continuum emission. The [CII] line velocities are offset by a few hundred km/s relative to the Ly{alpha} emission, possibly indicating the presence of outflows or a large reservoir of surrounding atomic gas. From the combination of dust continuum and rest-frame UV emission, we estimate that approximately 50% of the star formation is obscured by dust, consistent with values found in other massive star-forming galaxies at similar redshifts. The [CII]-to-FIR luminosity ratios of the continuum-detected galaxies are elevated compared to nearby galaxies with similar FIR luminosities. In one system, J163026+4315, the [CII] emission is spatially resolved, allowing us to measure the source size and FIR surface brightness (FIR). We find that the [CII/FIR ratio as a function of FIR in this source follows the trends observed in both local and high-redshift galaxy populations. A kinematic analysis of the resolved [CII] emission provides tentative evidence for a rotating disk, although higher angular resolution data are needed to confirm this. These results demonstrate the power of NOEMA to probe the physical conditions and structure of the interstellar medium in galaxies in the first billion years of cosmic history.2026A&A...708A.361Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A361CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/708/A361https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/708/A361http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/708/A361https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/708/A361https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/708/A361http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/708/A361GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/708/A361/list (List of fits datacubes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/708/A361/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/708/A361/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/708/A361/list?GETtext/xml+votable180.050000true229.2411142.481340.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/708/A3616/9895 9905 9986https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/708/A361?format=asciiRadiodefaultJ/A+A/708/A361/listList of fits datacubesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNzNumber of slicesmeta.numberintbVRADLower value of VRAD intervalm/sphys.velocintBVRADUpper value of VRAD intervalm/sphys.velocintdVRADVRAD Rresolutionm/sspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitscharAssocDataAssociated Data web pagemeta.ref.urlchar