J/ApJ/640/982ivo://CDS.VizieR/J/ApJ/640/982doi:10.26093/cds/vizier.16400982CDSChen X.Shen Z.-Q.Imai H.Kamohara R.2017-10-16T14:57:48Z2007-11-30T22:32:58ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyWe report Very Long Baseline Array (VLBA) observations of 43GHz v=1, J=1-0 SiO masers in the circumstellar envelope of the M-type semiregular variable star VX Sgr at three epochs during 1999 April-May. These high-resolution VLBA images reveal a persistent ringlike distribution of SiO masers with a projected radius of ~3 stellar radii. The typical angular size of 0.5mas for individual maser features was estimated from two-point correlation function analysis of maser spots.2006ApJ...640..982Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/640/982CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/393/115 : 86GHz SiO maser survey of late-type stars (Messineo+, 2002)J/A+A/418/103 : 86GHz SiO maser survey in the Inner Galaxy (Messineo+, 2004)J/A+A/435/575 : 86GHz SiO maser survey of late-type stars III (Messineo+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/640/982https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/640/982http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/640/982https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/640/982https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/640/982http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/640/982GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/ApJ/640/982/data43GHz SiO maser features around VX Sgr observed by the VLBA on 1999 April 24 (Epoch 1), 1999 May 23 (Epoch 2) and 1999 May 31 (Epoch 3) (tables 2, 3 and 4 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpSimbad column added by the CDStime.epochcharSeqSequential number (1)meta.recordintn_Seq[ab] Note on Seq (2)meta.notecharVLSRVelocity in the Local Standard of Rest at the peak of the velocity profilekm/sphys.veloc;pos.lsrfloate_VLSRError in VLSRkm/sstat.error;phys.veloc;pos.lsrfloatDeluVelocity range across the feature (3)km/sinstr.bandwidthfloatDelVFWHM velocity {Delta}Vkm/spos.cartesian.yfloate_DelVError on DelVkm/sstat.errorfloatxFeature position in Right Ascension (4)maspos.eq.ra;arith.difffloate_xError on x (4)masstat.error;pos.cartesian.xfloatyFeature position in Declination (4)maspos.eq.dec;arith.difffloate_yError on y (4)masstat.error;pos.cartesian.yfloatLAngular size of the featuremasphys.angSizefloatSpPeak flux density (43GHz) of the featureJyphot.flux.density;em.mm.30-50GHzfloatSintIntegrated flux density of all spots in the featureJy.km/sphot.flux.density;em.mm.30-50GHzfloatID1? Match ID at epoch 1meta.idintnullableID2? Match ID at epoch 2meta.idintnullableID3? Match ID at epoch 3meta.idintnullable