J/A+A/464/263ivo://CDS.VizieR/J/A+A/464/263doi:10.26093/cds/vizier.34640263CDSBozic H.Wolf M.Harmanec P.Prsa A.Percy J.R.Ruzdjak D.Sudar D.,Slechta M.Ak H.Eenens P.2017-06-26T11:50:25Z2007-06-17T08:29:22ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsvisible-astronomybroad-band-photometryAfter a serendipitious discovery that HD 143418 is a light variable, we analyzed numerous UBV observations and Hipparcos H_p_ magnitudes transformed to Johnson V to find out whether the object is a very unusual spectroscopic binary. Initial reductions of new photometry were carried out with the HEC22 program, while the new spectra were reduced in the IRAF and SPEFO programs. Orbital elements were derived with the FOTEL program, the KOREL disentangling was applied, and period searches were carried out using phase dispersion minimalization technique and the program PERIOD04. Final modeling of radial-velocity and light variations was carried out in PHOEBE.2007A&A...464..263Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/464/263CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/464/263https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/464/263http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/464/263https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/464/263https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/464/263http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/464/263GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/464/263/table3UBV photometric data of HD 143418HJDHeliocentric Julian datedtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintwWeight of the data pointstat.weight;phys.atmol.weightfloatVmag? Johnson V magnitude (1)magphot.mag;em.opt.VfloatnullableBmag? Johnson B magnitude (1)magphot.mag;em.opt.BfloatnullableUmag? Johnson U magnitude (1)magphot.mag;em.opt.UfloatnullableB-V? Johnson B-V colour index (1)magphot.color;em.opt.B;em.opt.VfloatnullableU-B? Johnson U-B colour index (1)magphot.color;em.opt.U;em.opt.BfloatnullableXAir mass of the observationobs.airMassfloatdXAir mass difference between var. and comp.obs.airMassfloatStationNumerical code identifying sources of data in the Ondrejov/Praha data archives (2)meta.codeint