J/ApJ/809/10ivo://CDS.VizieR/J/ApJ/809/10doi:10.26093/cds/vizier.18090010CDSYusef-Zadeh F.Bushouse H.Schodel R.Wardle M.Cotton W.,Roberts D.A.Nogueras-Lara F.Gallego-Cano E.2017-01-23T22:00:00Z2016-05-03T15:16:40ZCDS support team

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

cds-question@unistra.frradio-continuum-emissionastronomical-object-identificationinfrared-sourcesmilky-way-galaxyRecent broadband 34 and 44GHz radio continuum observations of the Galactic center have revealed 41 massive stars identified with near-IR (NIR) counterparts, as well as 44 proplyd candidates within 30" of SgrA*. Radio observations obtained in 2011 and 2014 have been used to derive proper motions of eight young stars near Sgr A*. The accuracy of proper motion estimates based on NIR observations by Lu et al. (2009ApJ...690.1463L) and Paumard et al. (2006, J/ApJ/643/1011) have been investigated by using their proper motions to predict the 2014 epoch positions of NIR stars and comparing the predicted positions with those of radio counterparts in the 2014 radio observations. Predicted positions from Lu et al. show an rms scatter of 6mas relative to the radio positions, while those from Paumard et al. show rms residuals of 20mas. We also determine the mass-loss rates of 11 radio stars, finding rates that are on average ~2 times smaller than those determined from model atmosphere calculations and NIR data. Clumpiness of ionized winds would reduce the mass loss rate of WR and O stars by additional factors of 3 and 10, respectively. One important implication of this is a reduction in the expected mass accretion rate onto Sgr A* from stellar winds by nearly an order of magnitude to a value of a few x10^-7^m_{sun}_/yr. Finally, we present the positions of 318 compact radio sources within 30" of Sgr A*, 45 of which have stellar counterparts in the NIR K_s_ (2.18{mu}m) and L' (3.8{mu}m) bands.2015ApJ...809...10Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/809/10CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/566/A47 : MW nuclear star cluster extinction map (Schoedel+, 2014)J/ApJ/725/331 : Astrometry in the Galactic Center (Yelda+, 2010)J/A+A/511/A18 : NIR observations of stars near SgrA* (Schoedel+, 2010)J/ApJ/707/L114 : The orbit of S2 star around Sgr A* (Gillessen+, 2009)J/ApJ/659/1241 : Stellar variability in Galactic Center (Rafelski+, 2007)J/ApJ/643/1011 : Early-type stars in the center of the Galaxy (Paumard+, 2006)J/A+A/433/117 : L- + M-band imaging of the Galactic Center (Viehmann+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/809/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/809/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/809/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/809/10https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/809/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/809/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/809/10/table6 (Gaussian fitted parameters of 34.5GHz continuum sources within 30" of Sgr A*)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/809/10/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/809/10/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/809/10/table6?GETtext/xml+votable180.050000true266.416826389-29.0077969440.0055555555555555566/288302.2859940017562635e-23 9.843582962419539e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/809/10?format=asciiRadioInfrareddefaultJ/ApJ/809/10/table6Gaussian fitted parameters of 34.5GHz continuum sources within 30" of Sgr A*recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/318] Running sequence number of the radio sourcemeta.id;meta.mainintANameNIR identified stellar sourcemeta.id.crosscharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSep[0/33.4] Angular distance from Sgr A*arcsecpos.angDistancefloatPosErr[0/220.2] Positional precisionmasmeta.code.qual;instr.precisionfloatamaj[4/10330]? Deconvolved source major axis size {theta}_a_masphys.angSize.smajAxisintnullableamin[0/375]? Deconvolved source minor axis size {theta}_b_masphys.angSizeintnullablePA? Deconvolved source position angledegpos.posAngintnullablePk[0.02/1720] 34.5GHz peak radio intensitymJy/beamphot.flux.density;em.mm.30-50GHzdoublee_Pk[0.003/0.02] IPk uncertaintymJy/beamstat.errorfloatFlux[0/1723] 34.5GHz integrated fluxmJyphot.flux.density;em.mm.30-50GHzdoublee_Flux[0.001/0.6] Flux uncertaintymJystat.error;phot.fluxfloatFKs[0.02/149]? VLT/NACO Ks (2.18um) flux densitymJyphot.mag;em.IR.Kfloatnullablee_FKs[0.001/8]? FKs uncertaintymJystat.errorfloatnullableFL'[0.07/1253]? VLT/NACO L' (3.8um) flux densitymJyphot.flux.density;em.IR.3-4umfloatnullablee_FL'[0.004/66]? FL' uncertaintymJystat.errorfloatnullableCommReferences and comments on individual source (1)meta.refchar