J/A+A/398/239ivo://CDS.VizieR/J/A+A/398/239doi:10.26093/cds/vizier.33980239CDSRibas I.2017-06-20T13:16:01Z2003-02-26T22:37:14ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyphotometryPhotometric observations in the R and I bands of the detached M-type double-lined eclipsing binary CU Cnc have been acquired and analysed. The photometric elements obtained from the analysis of the light curves have been combined with an existing spectroscopic solution to yield high-precision (errors<2%) absolute dimensions: M_A_=0.4333+/-0.0017M_{sun}_, M_B_=0.3980+/-0.0014M_{sun}_, R_A_=0.4317+/-0.0052R_{sun}_, and R_B_=0.3908+/-0.0094R_{sun}_. The mean effective temperature of the system has been estimated to be Teff=3140+/-150K by comparing multi-band photometry with synthetic colors computed from model atmospheres. Additionally, we have been able to obtain an estimate for the age (~320Myr) and chemical composition ([Fe/H]~0.0) of the binary system through its membership of the Castor moving group.2003A&A...398..239Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/398/239CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/398/239https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/398/239http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/398/239https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/398/239https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/398/239http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/398/239GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/A+A/398/239/table1R-band differential photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhaseOrbital phasetime.phasefloatDmagDifferential magnitude (CU Cnc - HD 72093)magphot.mag;arith.difffloatJ/A+A/398/239/table2I-band differential photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhaseOrbital phasetime.phasefloatDmagDifferential magnitude (CU Cnc - HD 72093)magphot.mag;arith.difffloat