J/MNRAS/528/5703ivo://CDS.VizieR/J/MNRAS/528/5703doi:10.26093/cds/vizier.75285703CDSSwayne M.I.Maxted P.F.L.Triaud A.H.M.J.Sousa S.G.Deline A.,Ehrenreich D.Hoyer S.Olofsson G.Boisse I.Duck A.Gill S.,Martin D.McCormac J.Persson C.M.Santerne A.Sebastian D.,Standing M.R.Acuna L.Alibert Y.Alonso R.Anglada G.Barczy T.,Barrado Navascues D.Barros S.C.C.Baumjohann W.Baycroft T.A.Beck M.,Beck T.Benz W.Billot N.Bonfils X.Borsato L.Bourrier V.,Brandeker A.Broeg C.Carmona A.Charnoz S.Collier Cameron A.,Cortes-Zuleta P.Csizmadia Sz.Cubillos P.E.Davies M.B.Deleuil M.,Delfosse X.Delrez L.Demangeon O.D.S.Demory B.-O.Dransfield G.,Erikson A.Fortier A.Forveille T.Fossati L.Fridlund M.Gandolfi D.,Gillon M.Guedel M.Guenther M.N.Hara N.Hebrard G.Heidari N.,Hellier C.Helling C.Isaak K.G.Kerschbaum F.Kiefer F.Kiss L.L.,Kunovac V.Lalitha S.Lam K.W.F.Laskar J.Lecavelier des Etangs A.,Lendl M.Magrin D.Marafatto L.Martioli E.Miller N.J.Mordasini C.,Moutou C.Nascimbeni V.Ottensamer R.Pagano I.Palle E.Peter G.,Piazza D.Piotto G.Pollacco D.Queloz D.Ragazzoni R.Rando N.,Rauer H.Ribas I.Santos N.C.Scandariato G.Segransan D.Simon A.E.,Smith A.M.S.Southworth R.Stalport M.Szabo Gy.M.Thomas N.Udry S.,Ulmer B.Van Grootel V.Venturini J.Walton N.A.Willett E.Wilson T.G.2024-11-06T20:35:14Z2024-02-19T09:09:59ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsm-starsphotometryvisible-astronomyObservations of low-mass stars have frequently shown a disagreement between observed stellar radii and radii predicted by theoretical stellar structure models. This "`radius inflation" problem could have an impact on both stellar and exoplanetary science. We present the final results of our observation programme with the CHEOPS satellite to obtain high-precision light curves of eclipsing binaries with low mass stellar companions (EBLMs). Combined with the spectroscopic orbits of the solar-type companion, we can derive the masses, radii and effective temperatures of 23 M-dwarf stars. We use the PYCHEOPS data analysis software to analyse their primary and secondary occultations. For all but one target, we also perform analyses with TESS light curves for comparison. We have assessed the impact of starspot-induced variation on our derived parameters and account for this in our radius and effective temperature uncertainties using simulated light curves. We observe trends for inflation with both metallicity and orbital separation. We also observe a strong trend in the difference between theoretical and observational effective temperatures with metallicity. There is no such trend with orbital separation. These results are not consistent with the idea that observed inflation in stellar radius combines with lower effective temperature to preserve the luminosity predicted by low-mass stellar models. Our EBLM systems are high- quality and homogeneous measurements that can be used in further studies into radius inflation.2024MNRAS.528.5703Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/528/5703CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch 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)J/A+A/604/L6 : EBLM J0555-57 photometry and RV (von Boetticher+, 2017)J/A+A/625/A150 : 10 very-low-mass stars photometry (von Boetticher+, 2019)J/A+A/626/A119 : EBLM J2349-32 photometry, RV and spectra (Gill+, 2019)J/MNRAS/519/3546 : The EBLM project - IX. (Sebastian+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/528/5703https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/528/5703http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/528/5703https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/528/5703https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/528/5703http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/528/5703GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/528/5703/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/5703/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/5703/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/5703/stars?GETtext/xml+votable180.050000true14.4955833-19.82986110.005555555555555556Cone search capability for table J/MNRAS/528/5703/list (List of fits files)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/528/5703/list?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/528/5703/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/528/5703/list?GETtext/xml+votable180.050000true14.4955833-19.82986110.0055555555555555566/2228 2296 6188 9904 12334 12694 13663 16742 20173 20376 21086 21108 27252 31249 32689 36431 38511 38654 43918 47450 47454 47528 47884https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/528/5703?format=asciiOpticaldefaultJ/MNRAS/528/5703/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEBLMEBLM name (JHHMM+DD)meta.id;meta.maincharNameStar name (1SWASPJHHMMSS.ss+DDMMSS.s)meta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainLC1Show the light curvemeta.ref.urlcharFileNameName of the file with detrended CHEOPS light curves containing the transit and eclipse in subdirectory lcmeta.id;phys.composition.massLightRatio;meta.filecharfitsDisplay the fits file informationsmeta.ref.urlcharJ/MNRAS/528/5703/listList of fits filesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEBLMEBLM name (JHHMM+DD)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablesizeSize of FITS fileKibytephys.size;meta.fitsintLC2Show the light curvemeta.ref.urlcharFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar