J/A+A/574/A33ivo://CDS.VizieR/J/A+A/574/A33doi:10.26093/cds/vizier.35740033CDSReig P.Fabregat J.2018-05-29T17:47:28Z2015-01-20T08:26:47ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryWe present photometric observations of the field around the optical counterparts of high-mass X-ray binaries. Our aim is to study the long-term photometric variability in correlation with their X-ray activity and derive a set of secondary standard stars that can be used for time series analysis. We find that the donors in Be/X-ray binaries exhibit larger amplitude changes in the magnitudes and colours than those hosting a supergiant companion. The amplitude of variability increases with wavelength in Be/X-ray binaries and remains fairly constant in supergiant systems. When time scales of years are considered, a good correlation between the X-ray and optical variability is observed. The X-rays cease when optical brightness decreases. These results reflect the fact that the circumstellar disk in Be/X-ray binaries is the main source of both optical and X-ray variability. We also derive the colour excess, E(B-V), selecting data at times when the contribution of the circumstellar disk was supposed to be at minimum, and we revisit the distance estimates.2015A&A...574A..33Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/574/A33CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AZh/78/408 : Variability of Cyg X-1 in 1994-98 (Karitskaya+, 2001)J/PAZh/26/27 : Variability of Cyg X-1 (V1357) in 1995-96 (Karitskaya+, 2000)J/A+A/462/1081 : BVRIJHK light curves of 4U 0115+63/V635 Cas (Reig+, 2007)J/ApJ/685/436 : X-ray variability in 4U 1636-53 (Altamirano+, 2008)J/A+A/559/A87 : H{alpha} observations of LSI+61 303 (Zamanov+, 2013)J/AJ/146/60 : X-ray variability in 4U 1735-44 (Lei+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/574/A33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/574/A33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/574/A33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/574/A33https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/574/A33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/574/A33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/574/A33/tablea (Secondary standards in the field of view of high-mass X-ray binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/574/A33/tablea?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/574/A33/tablea?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/574/A33/tablea?GETtext/xml+votable180.050000true19.58041765.3411110.005555555555555556Cone search capability for table J/A+A/574/A33/targets (List of targets (table 1) with average magnitudes and amplitude of variability (table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/574/A33/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/574/A33/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/574/A33/targets?GETtext/xml+votable180.050000true19.5112565.2916670.0055555555555555566/1796 3149 3160 3308 3632 3687 3690 3728-3729 14056-14057 14251 14410 14437 14664 14677 15366-15367 15639 24325 24449 24451 30256 306182.367228618189496e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/574/A33?format=asciiInfraredOpticaldefaultJ/A+A/574/A33/tableaSecondary standards in the field of view of high-mass X-ray binariesDEJ2000Declination (J2000)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget X-ray namemeta.id.assoccharStarSecondary star name (CNN, within the Target)meta.id;meta.maincharID[2/228] Identification number within the Targetmeta.idintRAJ2000Right ascension (J2000)pos.eq.ra;meta.maind[0/6.2] Angular distance between the star and the targetarcminpos;arith.difffloatBmag[10.2/18.9] Mean Johnson B magnitudemagphot.mag;em.opt.Bfloato_Bmag[5/28] Number of observations in B bandmeta.numberinte_Bmag[0/0.03] Standard deviation on B magnitude (1)magstat.error;phot.mag;em.opt.BfloatVmag[10.0/17.2] Mean Johnson V magnitudemagphot.mag;em.opt.Vfloato_Vmag[5/28] Number of observations in V bandmeta.numberinte_Vmag[0/0.03] Standard deviation on V magnitude (1)magstat.error;phot.mag;em.opt.VfloatRmag[9.9/16.4] Mean Cousins R magnitudemagphot.mag;em.opt.Rfloato_Rmag[5/28] Number of observations in R bandmeta.numberinte_Rmag[0/0.03] Standard deviation on R magnitude (1)magstat.error;phot.mag;em.opt.RfloatImag[9.8/15.7] Mean Cousins I magnitudemagphot.mag;em.opt.Ifloato_Imag[5/25] Number of observations in I bandmeta.numberinte_Imag[0/0.03] Standard deviation on I magnitude (1)magstat.error;phot.mag;em.opt.IfloatJ/A+A/574/A33/targetsList of targets (table 1) with average magnitudes and amplitude of variability (table 2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetX-ray name of the sourcemeta.id;meta.maincharprimaryONameOptical name of the sourcemeta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypeMk spectral typesrc.spTypecharNsNumber of standard stars observed in the fieldmeta.numberintnullableFCView the finding chartmeta.ref.urlcharE(B-V)B-V colour excessmagphot.color.excessfloate_E(B-V)rms uncertainty in E(B-V)magstat.errorfloatDist[1.6/10] Distancekpcpos.distance;pos.heliocentricfloate_Dist[0.4/2.5] rms uncertainty on Distkpcstat.errorfloatdloss[yes no] disk loss ?meta.codecharXRX-ray outburst (I, II or flare)meta.codecharBmag[9.7/22.2] Mean Johnson B magnitudemagphot.mag;em.opt.Bfloato_Bmag[6/28] Number of observations in B bandmeta.numberintVmag[9.2/19.5] Mean Johnson V magnitudemagphot.mag;em.opt.Vfloato_Vmag[6/28] Number of observations in V bandmeta.numberintRmag[8.7/17.4] Mean Cousins R magnitudemagphot.mag;em.opt.Rfloato_Rmag[6/28] Number of observations in R bandmeta.numberintImag[8.3/15.2] Mean Cousins I magnitudemagphot.mag;em.opt.Ifloato_Imag[6/23] Number of observations in I bandmeta.numberintBamp[0/0.7] Amplitude of variation in B magnitude (1)magarith.rate;src.var.amplitudefloatu_Bamp[+] Uncertainty flag on Bamp (2)meta.code.errorcharVamp[0/0.9] Amplitude of variation in V magnitude (1)magarith.rate;src.var.amplitudefloatRamp[0/1.1] Amplitude of variation in R magnitude (1)magarith.rate;src.var.amplitudefloatIamp[0/1.1] Amplitude of variation in I magnitude (1)magarith.rate;src.var.amplitudefloatSimbadSimbad column added by the CDSmeta.ref.urlcharFileNameName of the file with the finding charts image in subdirectory "images"meta.id;meta.filechar