J/A+A/374/132ivo://CDS.VizieR/J/A+A/374/132doi:10.26093/cds/vizier.33740132CDSLampens P.Oblak E.Duval D.Chareton M.2001-09-08T19:40:36Z2001-09-08T19:39:54ZCDS support team

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

cds-question@unistra.frmultiple-starsvisible-astronomykron-cousins-photometryccd-photometryWe present new astrometric and photometric data for 253 visual double stars of the "intermediate" class, i.e. with angular separations in the range 1 to 15 arcsec. The multi-colour observations were obtained in 1992-94 as part of the ESO Key Programme "Visual Double Stars" performed at La Silla Observatory (Chile). Differential magnitudes and colours have been secured in a systematic way while component magnitudes and colour indices have been determined in the V and I passbands of the Cousins standard system in good photometric conditions only. Internal and mean external errors are respectively smaller than 0.01mag and a few hundred of a magnitude (0.02 to 0.03mag). Relative positions are obtained as a by-product with internal errors of the order of 0.006arcsec in angular separation and 0.08{deg} in position angle. Final accuracies are thoroughly discussed: we illustrate the overall excellent quality of the data and estimate the quality degradation for angular separations barely larger than the width of the seeing disk.2001A&A...374..132Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/374/132CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/A+AS/139/425 : CCD photometry and astrometry of double stars. II.https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/374/132https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/374/132http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/374/132https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/374/132https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/374/132http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/374/132GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/374/132/stars (Star positions (from Simbad))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/374/132/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/374/132/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/374/132/stars?GETtext/xml+votable180.050000true114.280833-13.8686110.0055555555555555566/147 1703 4134 4240 12526 16401 16431 16453 16520 16541 16565 17177 17234 17317 17447 17717 18038 18731 18815 19517 19589 20005 20551 20639 20673 20735 20756 20777 20793 20868 20942 20953 21076 21084 21261 21322 21337 21531 21659 22558 22620 22831 22895 22961 22978 23129 23311 23347 23587 23591 23599 23608 24230 28964 28968 29161 29276 29442 29701 31699 32792 33003 33065 33100 33102 33150 33225 33255 33298 33344 33408 33430 33442 33455 33477 33498 33531 33625 33742 33766 33785 33803 33815 33877 33890 33997 34000 34003 34032 34076 34091 34126 34133-34134 34204 34233 34242 34342-34343 34375 34387 34403 34415 34435 34487 34496 34562 34566 34611 34713 34740 34835 34844 34904 34913 35071 35091 35163 35216 35327 35361 35381 35397-35398 35479 35524 35564 35577 35805 35992 36011 36148 36232 36297 36412 36428 36462 36484 36516 36661 36672 36686 36798 37108 37414 37521 37903 38574 38941 39008 39023 39081 39086 39122 39139 39154 39297 39315 39395 39431 39441 39449 39458 39487 39492 39499 39508 39532 39543 39569 39579 39691-39692 39720 39827 39832 39880 39910 40713 40760 40811 40838 41410 41821 42034 42053 42077 42095 42120 42163 42169-42170 42247 42275 42339 42607 45159 45174 45325 45330 45378 45382 45418 45423 45473 45554 45631 45738 45874 45925 45941 46021 46051 46162 46191 46203 46213 46365-46366 46409 46535 46602 46611 46628 46676 46748 46878 46926 46967 47165 47249 47269 47320 47335 47381 47486 47494 47577 47640 47680 47693-47694 47784 47812 47971 48142 48144 48653 48770 48779https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/374/132?format=asciiOpticaldefaultJ/A+A/374/132/starsStar positions (from Simbad)HIP_datashow the Hipparcos data for this starmeta.refcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar designationmeta.id;meta.maincharprimarySimbadask the SIMBAD data-base about this objectmeta.refcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainJ/A+A/374/132/table3CCD astrometry and differential photometry for 239 Hipparcos and 14 non-Hipparcos starso_VmagNumber of frames in Cousins filter Vmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar designation (1)meta.id;meta.maincharm_Name[ 1/] Last digit of HIP number for doublemeta.code.multipcharHIP_datashow the Hipparcos data for this starmeta.refcharn_Name[a] (appendix a: astrometric standard)meta.notecharNobsNumber of different observationsmeta.numberintComp[ABC] Component designation to which the relative data refermeta.idcharNframeTotal number of framesmeta.numberintrhoMean separation (2)arcsecpos.angDistance;src.orbitalfloate_rho? Standard error of the mean separationarcsecstat.errorfloatnullablethetaMean position angle (2)degpos.posAngfloate_thetaStandard error of the mean position angledegstat.errorfloatDVmag? Instrumental magnitude difference in Vmagphot.mag;arith.difffloatnullablee_DVmag? Standard error of the mean instrumental magnitude difference in Vmagstat.errorfloatnullableo_ImagNumber of frames in Cousins filter Imeta.numberintDImag? Instrumental magnitude difference in Imagphot.mag;arith.difffloatnullableu_DImagUncertainty flag on DImagmeta.code.errorchare_DImag? Standard error of the mean instrumental magnitude difference in Imagstat.errorfloatnullableDateDate of observation (Besselian year)yrtime.epochdoubleObsInitials of observer(s)obs.observerchardH? Difference between the CCD and the Hipparcos relative positionarcsecpos;arith.difffloatnullableJ/A+A/374/132/table4CCD VI photometry for 203 Hipparcos and 9 astrometric standard double starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar designationmeta.id;meta.maincharn_Name[a] (appendix a: astrometric standard)meta.notecharHIP_datashow the Hipparcos data for this starmeta.refcharHJDJulian datedtime.epochdoubleo_VmagNumber of frames in filter Vmeta.numberintVmagACousins V magnitude of component Amagphot.mag;em.opt.Vfloate_VmagAStandard error of V magnitude of component Amagstat.errorfloatVmagBCousins V magnitude of component Bmagphot.mag;em.opt.Vfloate_VmagBStandard error of V magnitude of component Bmagstat.errorfloato_ImagNumber of frames in filter Imeta.numberintV-IA? Cousins colour index V-I of component Amagphot.color;em.opt.V;em.opt.Ifloatnullablee_V-IA? Standard error of colour index of component Amagstat.errorfloatnullableV-IB? Cousins colour index V-I of component Bmagphot.color;em.opt.V;em.opt.Ifloatnullablee_V-IB? Standard error of colour index of component Bmagstat.errorfloatnullableDVmagMagnitude difference in Vmagphot.mag;arith.difffloatDV-I? Difference of the colour index V-Imagphot.color;em.opt.V;em.opt.IfloatnullableJ/A+A/374/132/table5CCD only I photometry for 4 Hipparcos and 1 astrometric standard double starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar designationmeta.id;meta.maincharn_Name[a] (appendix a: astrometric standard)meta.notecharHIP_datashow the Hipparcos data for this starmeta.refcharJDJulian datedtime.epochdoubleo_ImagNumber of frames in filter Imeta.numberintImagACousins I magnitude of component Amagphot.mag;em.opt.Ifloate_ImagAStandard error of I magnitude of component Amagstat.errorfloatImagBCousins I magnitude of component Bmagphot.mag;em.opt.Ifloate_ImagBStandard error of I magnitude of component Bmagstat.errorfloatDImagCousins magnitude difference in Imagphot.mag;arith.difffloat