J/MNRAS/521/3405ivo://CDS.VizieR/J/MNRAS/521/3405doi:10.26093/cds/vizier.75213405CDSJennings Z.Southworth J.Maxted P.F.L.Mancini L.2024-08-22T20:17:08Z2023-07-10T08:13:09ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryvisible-astronomyPrecise measurements of stellar parameters are required in order to develop our theoretical understanding of stellar structure. These measurements enable errors and uncertainties to be quantified in theoretical models and constrain the physical interpretation of observed phenomena, such as the inflated radii of low-mass stars. We use newly-available TESS (Transiting Exoplanet Survey Satellite) light curves combined with published radial velocity measurements to improve the characterization of 12 low mass eclipsing binaries composed of an M dwarf accompanied by a brighter F/G star. We present and analyse ground-based simultaneous four-colour photometry for two targets. Our results include the first measurements of the fundamental properties of two of the systems. Light curve and radial velocity information were converted into the physical parameters of each component of the systems using an isochrone fitting method. We also derive the effective temperatures of the M dwarfs, almost tripling the number of such measurements. The results are discussed in the context of radius inflation. We find that exquisite precision in the age estimation of young objects is required to determine their inflation status. Ho wever, all but three of the objects are securely located among the main sequence, demonstrating radius inflation and the necessity to develop our understanding of the complex physical processes governing the evolution of low-mass stars. We investigated the hypothesis that luminosity is unaffected by the inflation problem but the findings were not conclusive.2023MNRAS.521.3405Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/3405CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009)J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010)J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011)J/MNRAS/420/2580 : Four transits of HAT-P-13 (Southworth+, 2012)J/MNRAS/422/3099 : Transits of HAT-P-5 (Southworth+, 2012)J/MNRAS/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012)J/MNRAS/434/1300 : Planetary systems WASP-15, WASP-16 (Southworth+, 2013)J/MNRAS/444/776 : WASP-24, WASP-25 and WASP-26 (Southworth+, 2014)J/MNRAS/447/711 : Transiting planetary system WASP-103 (Southworth+, 2015)J/MNRAS/454/3094 : Transiting planetary system WASP-57 (Southworth+, 2016)J/MNRAS/457/4205 : WASP-22, WASP-41, WASP-42 and WASP-55 (Southworth+, 2016)J/AJ/153/191 : Transiting planetary system GJ 1132 (Southworth+, 2017)J/MNRAS/490/4230 : Transiting planet WASP-4b (Southworth+, 2019)J/A+A/635/A73 : Multiplicity study of transiting exoplanet hosts. I.J/A+A/635/A74 : Transiting planet WASP-76 (Southworth+, 2020)J/MNRAS/515/3212 : Transiting planet HATS-18b (Southworth+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/521/3405https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/521/3405http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/521/3405https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/521/3405https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/521/3405http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/521/3405GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/521/3405/tyc2755Differential photometry of TYC 2755-36-1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFilterFilter used for the observationinstr.setup;instr.filtercharBJDBarycentric Julian Date for the midpoint of observation (TDB)dtime.epochdoublemagDifferential magnitude magnitudemagphot.mag;arith.diffdoublee_magMeasurement error of the differential magnitudemagstat.error;phot.magdoubleJ/MNRAS/521/3405/tyc3121Differential photometry of TYC 3121-1659-1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTelTelescope used for the observation (only for tyc3121.dat)instr.setupcharFilterFilter used for the observationinstr.setup;instr.filtercharBJDBarycentric Julian Date for the midpoint of observation (TDB)dtime.epochdoublemagDifferential magnitude magnitudemagphot.mag;arith.diffdoublee_magMeasurement error of the differential magnitudemagstat.error;phot.magdouble