J/MNRAS/344/1ivo://CDS.VizieR/J/MNRAS/344/1doi:10.26093/cds/vizier.73440001CDSMurakawa K.Yates J.A.Richards A.M.S.Cohen R.J.2024-06-28T20:17:31Z2012-09-27T09:29:46ZCDS support team

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

cds-question@unistra.frsupergiant-starsastrophysical-masersradio-astronomyWe used MERLIN to observe 22-GHz H_2_O maser emission from the red supergiant VX Sgr in 1994 and 1999. The masers lie in a region 300-400mas in diameter. The angular size and the velocity distribution of the masers are similar at both epochs, although the total flux density in 1999 is only half of that seen in 1994.2003MNRAS.344....1Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/344/1CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/640/982 : 43GHz SiO maser features around VX Sgr (Chen+, 2006)J/A+A/524/A99 : Polarisation of S Per and VX Sgr in OH (Szymczak+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/344/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/344/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/344/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/344/1https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/344/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/344/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap1.4577353054677623e-23 1.4577353054677623e-23RadiodefaultJ/MNRAS/344/1/tables122GHz H_2_O maser features in the CSE of VX Sgr observed by MERLIN in 1994xError-weighted centroidmaspos;arith.difffloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID1ID number, 1994 observationmeta.idintVlsrFlux-weighted mean LSR velocitykm/sphys.veloc;pos.lsrfloatDVChange in VLSR across the whole feature, {Delta}Vkm/sarith.rate;phys.veloc;pos.lsrfloatDV1/2Velocity FWHM, {Delta}V_1/2_km/sinstr.bandwidthfloate_DV1/2rms uncertainty on DV1/2km/sstat.errorfloate_xrms uncertainty on xmasstat.error;pos.cartesian.xfloatyError-weighted centroidmaspos;arith.difffloate_yrms uncertainty on ymasstat.error;pos.cartesian.yfloatPP flux density (in Jy/beam), at 22GHzJyphot.flux.density;em.radio.12-30GHzdoubleSIntegrated flux density, at 22GHzJy.km/sphot.flux.density;em.radio.12-30GHzfloatID2? ID number, 1999 observationmeta.idintnullableJ/MNRAS/344/1/tables222GHz H_2_O maser features in the CSE of VX Sgr observed by MERLIN in 1999xError-weighted centroidmaspos;arith.difffloate_xrms uncertainty on xmasstat.error;pos.cartesian.xfloatyError-weighted centroidmaspos;arith.difffloate_yrms uncertainty on ymasstat.error;pos.cartesian.yfloatPP flux density (in Jy/beam), at 22GHzJyphot.flux.density;em.radio.12-30GHzfloatSIntegrated flux density, at 22GHzJy.km/sphot.flux.density;em.radio.12-30GHzfloatID1? ID number, 1994 observationmeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID2ID number, 1999 observationmeta.idintVlsrFlux-weighted mean LSR velocitykm/sphys.veloc;pos.lsrfloatDVChange in VLSR across the whole feature, {Delta}Vkm/sarith.rate;phys.veloc;pos.lsrfloatDV1/2Velocity FWHM, {Delta}V_1/2_km/sinstr.bandwidthfloate_DV1/2rms uncertainty on DV1/2km/sstat.errorfloatJ/MNRAS/344/1/tables3Summary of the proper motion analysis for common features between 1994 and 1999recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID1ID number, 1994 observationmeta.idintID2ID number, 1999 observationmeta.idintDeltaTotal angular separation between 1994 and 1999maspos.angDistancefloate_Deltarms uncertainty on Deltamasstat.error;pos.eq.decfloatDaRadial component of the total angular separation between 1994 and 1999, {Delta}amaspos.angDistancefloate_Darms uncertainty on Damasstat.errorfloatDthetaTangential component of the total angular separation between 1994 and 1999maspos.angDistancefloate_Dthetarms uncertainty on e_Dthetamasstat.errorfloatVaRadial component of the proper motion expansion velocitykm/sphys.veloc.expansionfloate_Varms uncertainty on Vakm/sstat.errorfloatVthetaTangential component of the proper motion expansion velocitykm/sphys.veloc.expansionfloate_Vthetarms uncertainty on Vthetakm/sstat.errorfloat