J/A+A/604/L6ivo://CDS.VizieR/J/A+A/604/L6doi:10.26093/cds/vizier.36049006CDSvon Boetticher A.Triaud A.H.M.JQueloz D.Gill S.Lendl M.Delrez L.,Anderson D.R.Collier Cameron A.Faedi F.Gillon M.,Gomez Maqueo Chew Y.Hebb L.Hellier C.Jehin E.Maxted P.F.L.,Martin D.V.Pepe F.Pollacco D.Segransan D.Smalley B.Udry S.,West R.2019-04-23T06:41:50Z2017-08-01T06:36:07ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryradial-velocityWe report the discovery of an eclipsing binary system with mass-ratio q After identifying a periodic photometric signal received by WASP, we obtained CORALIE spectroscopic radial velocities and follow-up light curves with the Euler and TRAPPIST telescopes. From a joint fit of these data we determine that EBLM J0555-57 consists of a sun-like primary star that is eclipsed by a low-mass companion, on a weakly eccentric 7.8-day orbit. Using a mass estimate for the primary star derived from stellar models, we determine a companion mass of 85+/-4M_Jup_ (0.081M_{sun}_) and a radius of 0.84^+0.14^_-0.04_R_Jup_ (0.084R_{sun}_) that is comparable to that of Saturn. EBLM J0555-57Ab has a surface gravity logg2=5.50^+0.03^_-0.13_ and is one of the densest non-stellar-remnant objects currently known. These measurements are consistent with models of low-mass stars.2017A&A...604L...6Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/604/L6CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/549/A18 : WASP-30 and J1219-39 light + velocity curves (Triaud+, 2013)J/A+A/572/A50 : J0113+31 light + velocity curves (Gomez Maqueo Chew+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/604/L6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/604/L6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/604/L6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/604/L6https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/604/L6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/604/L6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/604/L6/coralie1CORALIE radial velocities IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RV1 sigma photon noise error bars on RVkm/sstat.errordoubleFWHMFull-width at half-maximum of cross-correlation functionkm/sspect.line.widthdoubleContContrast of cross-correlation functionstat.fit.paramfloatBisSpanSpan of the bisector inverse slopekm/sphys.velocdoublepclean? Probability that spectrum is NOT contaminated by blendstat.fit.goodnessfloatnullableRej[0/1] Spectrum rejected: 1: rejected, 0: accepted (if pclean<0.01)meta.codeintComCommentsmeta.notecharJ/A+A/604/L6/coralie2CORALIE radial velocities IIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RV1 sigma photon noise error bars on RVkm/sstat.errordoubleFWHMFull-width at half-maximum of cross-correlation functionkm/sspect.line.widthdoubleContContrast of cross-correlation functionstat.fit.paramfloatBisSpanSpan of the bisector inverse slopekm/sphys.velocdoublepclean? Probability that spectrum is NOT contaminated by blendstat.fit.goodnessfloatnullableRej[0/1] Spectrum rejected: 1: rejected, 0: accepted (if pclean<0.01)meta.codeintComCommentsmeta.notecharJ/A+A/604/L6/eulerlEuler z band photometry, large aperture including A and B componentsxshiftCentroid shift on detectorpixinstr.paramfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000) UTCdtime.epochdoubleFluxNormalised fluxphot.flux;arith.ratiodoublee_Flux1 sigma error bar on the fluxstat.error;phot.fluxdoubleyshiftCentroid shift on detectorpixinstr.paramfloatAMAirmassobs.airMassfloatFWHMFull-width at half-maximum of centroidpixphys.angSizefloatSkySky background fluxmeta.notefloatExpTimeExposure timesstime.duration;obs.exposurefloatJ/A+A/604/L6/eulersEuler z band photometry, small aperture on A componentrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000) UTCdtime.epochdoubleFluxNormalised fluxphot.flux;arith.ratiodoublee_Flux1 sigma error bar on the fluxstat.error;phot.fluxdoublexshiftCentroid shift on detectorpixinstr.paramfloatyshiftCentroid shift on detectorpixinstr.paramfloatAMAirmassobs.airMassfloatFWHMFull-width at half-maximum of centroidpixphys.angSizefloatSkySky background fluxmeta.notefloatExpTimeExposure timesstime.duration;obs.exposurefloatJ/A+A/604/L6/trappistTRAPPIST z band photometry, aperture including A and B componentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD-2450000) UTCdtime.epochdoubleFluxNormalised fluxphot.flux;arith.ratiodoublee_Flux1 sigma error bar on the fluxstat.error;phot.fluxdoublexshiftCentroid shift on detectorpixinstr.paramdoubleyshiftCentroid shift on detectorpixinstr.paramdoubleFWHMxCentroid FWHM in xpixphys.angSize;srcdoubleFWHMyCentroid FWHM in ypixphys.angSize;srcdoubleFWHMCentroid FWHMpixphys.angSizedoubleSkySky background fluxmeta.notedoubleAMAirmassobs.airMassdoubleExpTimeExposure timestime.duration;obs.exposuredouble