J/A+A/518/A1ivo://CDS.VizieR/J/A+A/518/A1doi:10.26093/cds/vizier.35180001CDSMaiz Apellaniz J.2017-12-05T05:10:16Z2010-08-29T19:17:36ZCDS support team

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

cds-question@unistra.frmultiple-starso-starswolf-rayet-starsapparent-magnitudevisible-astronomysloan-photometryMassive stars have high-multiplicity fractions, and many of them have still undetected components, thus hampering the study of their properties. I study a sample of massive stars with high angular resolution to better characterize their multiplicity. I observed 138 fields that include at least one massive star with AstraLux, a lucky imaging camera at the 2.2m Calar Alto telescope. I also used observations of 3 of those fields with ACS/HRC on HST to obtain complementary information and to calibrate the AstraLux data. The results were compared with existing information from the Washington Double Star Catalog, Tycho-2, 2MASS, and other literature results.2010A&A...518A...1Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/518/A1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/518/A1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/518/A1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/518/A1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/518/A1https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/518/A1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/518/A1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/518/A1/table2 (List and properties of the detected pairs in the ACS/HRC data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/518/A1/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/518/A1/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/518/A1/table2?GETtext/xml+votable180.050000true100.24441949.89575420.005555555555555556Cone search capability for table J/A+A/518/A1/table3 (List and properties of the detected pairs in the AstraLux data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/518/A1/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/518/A1/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/518/A1/table3?GETtext/xml+votable180.050000true0.989591461.10363580.0055555555555555566/1287 1299 1302-1303 1332 1790 2806 3011 3051 3066 3231 3247 3300-3301 3307-3308 3312 3384 3600 3642 3644 6891 14240 14255 14263 14283 14630 14636 14653 14692 14719 14788 15478 15683 21438-21439 22088 22211 22246 22249 22253 22854 22884 23637 23717 23962 23995 24179 24496 29095https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/518/A1?format=asciiOpticaldefaultJ/A+A/518/A1/table2List and properties of the detected pairs in the ACS/HRC datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.framecharm_NamePair identification within systemmeta.code.multipcharFiltFilter used for observationsinstr.setup;instr.filtercharMJDModified Julian Date of the observationdtime.epochdoubleSepSeparationarcsecpos.angDistance;src.orbitalfloate_Seprms uncertainty in separationarcsecstat.errorfloatPAOrientationdegpos.posAngfloate_PArms uncertainty in orientationdegstat.errorfloatdmagMagnitude differencemagphot.mag;arith.difffloate_dmagrms uncertainty in magnitude differencemagstat.error;phot.magfloatSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/518/A1/table3List and properties of the detected pairs in the AstraLux datau_dH[a] Quality flag (1)meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.framecharf_WDS[y/n] Pair in WDS? (yes/no)meta.codecharWDSWashington Double Star (B/wds) identificationmeta.codecharm_WDSPair identification within systemmeta.code.multipcharMJDModified Julian Date of the observationdtime.epochdoubleSepSeparation of the componentsarcsecpos.angDistance;src.orbitalfloate_Seprms uncertainty in separationarcsecstat.errorfloatPAOrientation (N to E)degpos.posAngfloate_PArms uncertainty in orientationdegstat.errorfloatu_dVT[a] Quality flag (1)meta.code.errorchardVT? Tycho-2 V magnitude differencemagphot.mag;arith.difffloatnullabledzSDSS z magnitude difference (AstraLux)magphot.mag;arith.difffloate_dzrms uncertainty in SDSS z magnitude differencemagstat.errorfloatdH? 2MASS H magnitude differencemagphot.mag;arith.difffloatnullableu_dK[ab] Quality flag (1)meta.code.errorchardK? 2MASS K magnitude differencemagphot.mag;arith.difffloatnullableSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main