J/ApJ/429/253ivo://CDS.VizieR/J/ApJ/429/253doi:10.26093/cds/vizier.14290253CDSGwinn C.R.1997-12-09T19:51:09Z1997-12-09T20:51:06ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyvery-long-baseline-interferometryVLBI observations of a H2O maser were done at five epochs in 1980-82 with a 5 station VLBI network (see 1992ApJ...393..149G). A model was fitted to each peak in any spectral channel exceeding 5 times the rms background. The minimum level of this background, due to system noise at the antennas, was about 0.2Jy at each epoch. The model parameters include right ascension and declination offset (x, y) relative to a reference position; the total flux density, S; and the angular diameter {theta}_H_, of the best-fitting Gaussian distribution of intensity. The fitted parameters are in table1.1994ApJ...429..253Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/429/253CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/429/253https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/429/253http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/429/253https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/429/253https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/429/253http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/429/253GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/ApJ/429/253/table1Features observed 1982 March 6recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[G94]Sequential numbermeta.id;meta.mainintoRARight ascension offset from a reference positionmaspos.eq.ra;arith.difffloatoDEDeclination offset from a reference positionmaspos.eq.dec;arith.difffloatVzDoppler velocitykm/sphys.veloc;pos.heliocentricfloatDVzLine widthkm/sspect.line.widthfloatSpPeak flux densityJyphot.flux.density;em.radio.12-30GHzintThetaAngular sizemasphys.angSize;srcfloat