J/A+A/624/A138ivo://CDS.VizieR/J/A+A/624/A138doi:10.26093/cds/vizier.36240138CDSYang C.Gavazzi R.Beelen A.Cox P.Omont A.Lehnert M.D.Gao Y.,Ivison R.J.Swinbank A.M.Barcos-Munoz L.Neri R.Cooray A.Dye S.,Eales S.Fu H.Gonzalez-Alfonso E.Ibar E.Michalowski M.J.Nayyeri H.,Negrello M.Nightingale J.Perez-Fournon I.Riechers D.A.Smail I.,van der Werf P.2019-05-13T08:20:01Z2019-04-26T08:47:46ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyinterstellar-mediummillimeter-astronomysubmillimeter-astronomyUsing the Atacama Large Millimeter/submillimeter Array (ALMA), we report high angular-resolution observations of the redshift z=3.63 galaxy H-ATLAS J083051.0+013224 (G09v1.97), one of the most luminous strongly lensed galaxies discovered by the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS). We present 0.2"-0.4" resolution images of the rest-frame 188 and 419um dust continuum and the CO(6-5), H_2_O(2_11_-2_02_), and Jup=2H_2_O^+^ line emission. We also report the detection of H_2_^18^O(2_11_-2_02_) in this source. The dust continuum and molecular gas emission are resolved into a nearly complete ~1.5" diameter Einstein ring plus a weaker image in the center, which is caused by a special dual deflector lensing configuration. The observed line profiles of the CO(6-5), H_2_O(2_11_-2_02_), and Jup=2H_2_O^+^ lines are strikingly similar. In the source plane, we reconstruct the dust continuum images and the spectral cubes of the CO, H_2_O, and H_2_O^+^ line emission at sub-kiloparsec scales. The reconstructed dust emission in the source plane is dominated by a compact disk with an effective radius of 0.7+/-0.1kpc plus an overlapping extended disk with a radius twice as large. While the average magnification for the dust continuum is {mu}~10-11, the magnification of the line emission varies from 5 to 22 across different velocity components. The line emission of CO(6-5), H_2_O(2_11_-2_02_), and H_2_O^+^ have similar spatial and kinematic distributions. The molecular gas and dust content reveal that G09v1.97 is a gas-rich major merger in its pre-coalescence phase, with a total molecular gas mass of ~10^11^M_{sun}_. Both of the merging companions are intrinsically ultra-luminous infrared galaxies (ULIRGs) with infrared luminosities LIR reaching 4x10^12^L_{sun}_, and the total LIR of G09v1.97 is (1.4+/-0.7)x10^13^L_{sun}_. The approaching southern galaxy (dominating from V=-400 to -150km/s relative to the systemic velocity) shows no obvious kinematic structure with a semi-major half-light radius of a_s_=0.4kpc, while the receding galaxy (0 to 350km/s) resembles an a_s_=1.2kpc rotating disk. The two galaxies are separated by a projected distance of 1.3kpc, bridged by weak line emission (-150 to 0km/s) that is co-spatially located with the cold dust emission peak, suggesting a large amount of cold interstellar medium (ISM) in the interacting region. As one of the most luminous star-forming dusty high-redshift galaxies, G09v1.97 is an exceptional source for understanding the ISM in gas-rich starbursting major merging systems at high redshift.2019A&A...624A.138Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/624/A138CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/595/A80 : H2O lines reduced spectra in 11 ULIRGs or HyLIRGs (Yang+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/624/A138https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/624/A138http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/624/A138https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/624/A138https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/624/A138http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/624/A138GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/624/A138/list (List of gits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/624/A138/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/624/A138/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/624/A138/list?GETtext/xml+votable180.050000true127.712671.540280.0055555555555555566/21880https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/624/A138?format=asciiMillimeterdefaultJ/A+A/624/A138/listList of gits imagesNxNumber of pixels along X-axismeta.numberintrecnoRecord 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.mainNyNumber of pixels along Y-axismeta.numberintFreqCentral sky frequencyGHzem.freqfloatsizeSize of FITS fileMbytephys.size;meta.fitsfloatFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits