J/A+A/558/A96ivo://CDS.VizieR/J/A+A/558/A96doi:10.26093/cds/vizier.35580096CDSBeuermann K.Dreizler S.Hessman F.V.Backhaus U.Boesch A.,Husser T.-O.Nortmann L.Schmelev A.Springer R.2017-06-21T08:22:04Z2013-10-14T08:52:55ZCDS support team

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

cds-question@unistra.freclipsing-binary-starswhite-dwarf-starsphotometryWe report photometric observations of the eclipsing close binary CSS21055 (SDSS J141126+200911) that strongly suggest that the companion to the carbon-oxygen white dwarf is a brown dwarf with a mass between 0.030 and 0.074M_{sun}. The measured orbital period is 121.73-min and the totality of the eclipse lasts 125s. If confirmed, CSS21055 would be the first detached eclipsing WD+BD binary. Spectroscopy in the eclipse could provide information about the companion's evolutionary state and atmospheric structure.2013A&A...558A..96Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/558/A96CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/558/A96https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/558/A96http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/558/A96https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/558/A96https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/558/A96http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/558/A96GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/558/A96/fig1aNumerical values for the light curve plotted in Fig. 1a based on twelve white-light eclipse light curves taken between 5 March and 26 June 2012SeqSequential numbermeta.recordintPhase[-0.5/0.5] Orbital phase of bin center based on Eq. (1) of the papertime.phasedoublerFlux[-0.05/1.05] Flux normalized to unity in phase intervals 0.03<abs(phase)<0.10phot.flux;arith.ratiodoublee_rFluxStatistical error derived from CCD photometry in individual imagesstat.errordoubleTExp? Exposure time of bin (for fig1a.dat only)stime.duration;obs.exposurefloatnullableJ/A+A/558/A96/fig1bNumerical values for the light curve plotted in Fig. 1b based on the white-light runs with 20s exposures performed on 5 March and 26 June 2012SeqSequential numbermeta.recordintPhase[-0.5/0.5] Orbital phase of bin center based on Eq. (1) of the papertime.phasedoublerFlux[-0.05/1.05] Flux normalized to unity in phase intervals 0.03<abs(phase)<0.10phot.flux;arith.ratiodoublee_rFluxStatistical error derived from CCD photometry in individual imagesstat.errordoubleTExp? Exposure time of bin (for fig1a.dat only)stime.duration;obs.exposurefloatnullableJ/A+A/558/A96/fig1cNumerical values for the binned I-band light curve plotted in Fig. 1c.SeqSequential numbermeta.recordintNf[7/43] Number of original flux values averaged per phase bin (1)stat.valueintPhase[-0.5/0.5] Mean phase of points weighted with the individual flux errorstime.phasedoublerFlux[-0.05/1.02] Weighted mean normalized fluxphot.flux;arith.ratiodoublee_rFluxWeighted mean errorstat.errordouble