J/ApJ/699/186ivo://CDS.VizieR/J/ApJ/699/186doi:10.26093/cds/vizier.16990186CDSZhao J.-H.Morris M.R.Goss W.M.An T.2018-01-05T08:56:18Z2011-09-27T09:15:01ZCDS support team

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

cds-question@unistra.frh-ii-regionsproper-motionsinterstellar-mediumradio-astronomyWe present new results based on high-resolution observations of Sgr A West at the Galactic center with the Very Large Array (VLA) at 1.3cm. By combining recent observations with those made at earlier epochs with the VLA at wavelengths of 1.3 and 3.6cm, we measured proper motions for 71 compact HII components in the central 80" (3pc, assuming D=8pc). Using VLA archival data for the H92{alpha} radio recombination line, we also investigated radial velocities in the LSR velocity range from +200 to -415km/s. Combining proper motion and radial velocity measurements, we have determined the three-dimensional velocity distribution in Sgr A West.2009ApJ...699..186Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/699/186CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/511/A18 : NIR observations of stars near SgrA* (Schoedel+, 2010)J/A+A/502/91 : Proper motions of stars near SgrA* (Schoedel+, 2009)J/ApJS/177/515 : 6cm and 20cm survey of Galactic Center (Law+, 2008)J/ApJ/670/1115 : IRS spectra at 38 positions in Galactic center (Simpson+,J/ApJS/155/421 : Survey of Galactic Center region at 20cm (Yusef-Zadeh+, 2004)J/AJ/128/1646 : The Galactic Center region at 330MHz (Nord+, 2004)J/A+A/426/81 : Kinematic analysis of the Minispiral (Paumard+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/699/186https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/699/186http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/699/186https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/699/186https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/699/186http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/699/186GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/699/186/table2 (Measurements of proper motion and radial velocity)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/699/186/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/699/186/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/699/186/table2?GETtext/xml+votable180.050000true266.4173156-28.99962560.005555555555555556Cone search capability for table J/ApJ/699/186/table3 (Radial velocities from three mini-spiral arms)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/699/186/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/699/186/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/699/186/table3?GETtext/xml+votable180.050000true266.4181572-28.99877220.005555555555555556Cone search capability for table J/ApJ/699/186/table1 (Log of data and observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/699/186/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/699/186/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/699/186/table1?GETtext/xml+votable180.050000true266.416867511-29.0077721490.0055555555555555566/28830https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/699/186?format=asciiRadiodefaultJ/ApJ/699/186/table2Measurements of proper motion and radial velocityIDSource (1)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_ID[d-h] Source located in IRS region (2)meta.notecharIRsInfrared identification (3)meta.id.crossRAoffRight ascension offset with respect to Sgr A* (G1)arcsecpos.eq.rae_RAoffRAoff uncertaintyarcsecstat.errorfloatDEoffDeclination offset with respect to Sgr A* (G1)arcsecpos.eq.decfloate_DEoffDEoff uncertaintyarcsecstat.errorfloatn_amaj[U] U: unresolvedmeta.notecharamaj? Deconvolved source major axis sizearcsecphys.angSizefloatnullablebmin? Deconvolved source minor axis sizearcsecphys.angSize;srcfloatnullablePA? Deconvolved source position angledegpos.posAngintnullablemuaProper motion along right ascensionmas/yrpos.pmfloate_muamua uncertaintymas/yrstat.errorfloatmudProper motion along declinationmas/yrpos.pmfloate_mudmud uncertaintymas/yrstat.errorfloatSimbadNameSimbad column added by the CDSmeta.idchar_RASimbad column added by the CDSdegpos.eq.ra;meta.main_DESimbad column added by the CDSdegpos.eq.dec;meta.mainJ/ApJ/699/186/table3Radial velocities from three mini-spiral armsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDsIDs of locations in the mini-spiral arms (1)meta.id;meta.maincharRAoffRight ascension offset from Sgr A* (G1)arcsecpos.eq.raDEoffDeclination offset from Sgr A* (G1)arcsecpos.eq.decfloatVlsrLSR velocity width of the spectral featureskm/sinstr.bandwidth;pos.lsrintVFWHMFWHM velocity width of the spectral featureskm/sinstr.bandwidthint_RASimbad column added by the CDSdegpos.eq.ra;meta.main_DESimbad column added by the CDSdegpos.eq.dec;meta.mainJ/ApJ/699/186/table1Log of data and observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[1.3/3.5] Observation wavelength (1)cminstr.filter;em.wl.centralfloatDateDate of observationtime.epochnullableRAB1950Hour of right ascension (B1950)pos.eq.ra;meta.mainDEB1950Degree of declination (B1950)pos.eq.dec;meta.mainf_pos[a] J2000 position (2)meta.codecharnuObserved frequencyGHzem.freqfloatnu0? Effective frequencyGHzem.freqfloatnullableVlsr? LSR velocitykm/sphys.veloc;pos.lsrintnullableDelnuFrequency intervalMHzem.freqfloatNchChannel numberinstr.dispersionintArrArray configurationinstr.setupchar