J/AJ/119/1389ivo://CDS.VizieR/J/AJ/119/1389doi:10.26093/cds/vizier.51191389CDSLacy C.H.S.Torres G.Claret A.Stefanik R.P.Latham D.W.Sabby J.A.2023-04-06T16:50:36Z2000-05-16T21:26:54ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryWe present photometric observations in B and V as well as spectroscopic observations of the 1.9 day-period, double-lined main-sequence eclipsing binary FS Mon. From the analysis of the light curves and radial velocity curves, we have determined the masses and radii of the components: 1.631+/-0.012 M_sun_ and 2.051+/-0.012 R_sun_ for the primary component; 1.461+/-0.010 M_sun_ and 1.629+/-0.012 R_sun_ for the secondary component. The formal uncertainties are all less than 1%. Based on our light curves as well as on the combined-light photometry of the system, we estimate effective temperatures of 6715+/-100 K for the primary and 6550+/-100 K for the secondary component, corresponding to spectral types of F2 and F4, respectively. Projected rotational velocities (v sin i) from the spectrograms are measured as 52+/-2 km.s^-1^ and 43+/-3 km.s^-1^, respectively, from the spectrograms and are consistent with rotation that is synchronous with the orbital motion.2000AJ....119.1389Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/119/1389CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/119/1389https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/119/1389http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/119/1389https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/119/1389https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/119/1389http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/119/1389GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/119/1389/table6Differential photometry of FS Mon in BrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intJDJulian dateddoubleDeltaBChange in the B band magnitudemagfloatJ/AJ/119/1389/table7Differential photometry of FS Mon in VrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intJDJulian dateddoubleDeltaVChange in the V band magnitudemagfloat