J/A+A/589/A44ivo://CDS.VizieR/J/A+A/589/A44doi:10.26093/cds/vizier.35890044CDSGoddi C.Ginsburg A.Zhang Q.2016-04-25T08:19:41Z2016-04-25T09:19:00ZCDS support team

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

cds-question@unistra.frh-ii-regionsinterstellar-mediumThis paper is the third in a series of NH_3_ multilevel imaging studies in well-known, high-mass star-forming regions. The main goal is to characterize kinematics and physical conditions of (hot and dense) circumstellar molecular gas around O-type young stars. We want to map at subarcsecond resolution highly excited inversion lines of NH_3_ in the high-mass star-forming region W51 Main (distance = 5.4kpc), which is an ideal target to constrain theoretical models of high-mass star formation. Using the Karl Jansky Very Large Array (JVLA), we mapped the hot and dense molecular gas in W51 Main with ~0.2"-0.3" angular resolution in five metastable (J = K) inversion transitions of ammonia (NH_3_): (J,K) = (6, 6), (7, 7), (9, 9), (10, 10), and (13, 13). These lines arise from energy levels between ~400K and ~1700K above the ground state. We also made maps of the (free-free) continuum emission at frequencies between 25 and 36GHz.2016A&A...589A..44Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/589/A44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/191/232 : CO survey of W51 molecular cloud (Bieging+, 2010)J/ApJ/720/1055 : VBLA observations of W51 Main/South (Sato+, 2010)J/A+A/582/A64 : W51/e2 and G34.3+0.2 IRAM spectra (Lykke+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/589/A44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/589/A44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/589/A44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/589/A44https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/589/A44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/589/A44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/589/A44/list (List of fits datacubes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/589/A44/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/589/A44/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/589/A44/list?GETtext/xml+votable180.050000true290.9329114.509610.0055555555555555566/30694https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/589/A44?format=asciidefaultJ/A+A/589/A44/listList of fits datacubesNxNumber 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.numberintNzNumber of slicesmeta.numberintObs.DateObservation datetime.epoch;obscharbFreqLower value of frequency intervalHzem.freq;stat.mindoubleBFreqUpper value of frequency intervalHzem.freq;stat.maxdoubledFreqFrequency resolutionHzspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits