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dc.contributor.authorGómez Maqueo Chew, Y.
dc.contributor.authorMorales, J.C.
dc.contributor.authorFaedi, F.
dc.contributor.authorGarcía-Melendo, E.
dc.contributor.authorHebb, L.
dc.contributor.authorRodler, F.
dc.contributor.authorDeshpande, R.
dc.contributor.authorMahadevan, S.
dc.contributor.authorMcCormac, J.
dc.contributor.authorBarnes, R.
dc.contributor.authorTriaud, A.H.M.J.
dc.contributor.authorLopez-Morales, M.
dc.contributor.authorSkillen, I.
dc.contributor.authorCollier Cameron, A.
dc.contributor.authorJoner, M.D.
dc.contributor.authorLaney, C.D.
dc.contributor.authorStephens, D.C.
dc.contributor.authorStassun, K.G.
dc.contributor.authorCargile, P.A.
dc.contributor.authorMontañés-Rodríguez, P.
dc.identifier.citationGómez Maqueo Chew , Y , Morales , J C , Faedi , F , García-Melendo , E , Hebb , L , Rodler , F , Deshpande , R , Mahadevan , S , McCormac , J , Barnes , R , Triaud , A H M J , Lopez-Morales , M , Skillen , I , Collier Cameron , A , Joner , M D , Laney , C D , Stephens , D C , Stassun , K G , Cargile , P A & Montañés-Rodríguez , P 2014 , ' The EBLM project : II. A very hot, low-mass M dwarf in an eccentric and long-period, eclipsing binary system from the SuperWASP survey ' , Astronomy & Astrophysics , vol. 572 , A50 .
dc.identifier.otherPURE: 159570572
dc.identifier.otherPURE UUID: 168e95c6-66e6-4958-9e45-a2289fa5c8b0
dc.identifier.otherScopus: 84913596208
dc.identifier.otherWOS: 000346101700068
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531496
dc.descriptionThe research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON). L.H.H. acknowledges funding support from NSF grant, NSF AST-1009810.en
dc.description.abstractIn this paper, we derive the fundamental properties of 1SWASPJ011351.29+314909.7 (J0113+31), a metal-poor (−0.40 ± 0.04 dex), eclipsing binary in an eccentric orbit (~0.3) with an orbital period of ~14.277 d. Eclipsing M dwarfs that orbit solar-type stars (EBLMs), like J0113+31, have been identified from their light curves and follow-up spectroscopy in the course of the WASP transiting planet search. We present the analysis of the first binary of the EBLM sample for which masses, radii and temperatures of both components are derived, and thus, define here the methodology. The primary component with a mass of 0.945 ± 0.045 M⊙ has a large radius (1.378±0.058 R⊙) indicating that the system is quite old, ~9.5 Gyr. The M-dwarf secondary mass of 0.186 ± 0.010 M⊙ and radius of 0.209 ± 0.011 R⊙ are fully consistent with stellar evolutionary models. However, from the near-infrared secondary eclipse light curve, the M dwarf is found to have an effective temperature of 3922 ± 42 K, which is ~600 K hotter than predicted by theoretical models. We discuss different scenarios to explain this temperature discrepancy. The case of J0113+31 for which we can measure mass, radius, temperature, and metallicity highlights the importance of deriving mass, radius, and temperature as a function of metallicity for M dwarfs to better understand the lowest mass stars. The EBLM Project will define the relationship between mass, radius, temperature, and metallicity for M dwarfs providing important empirical constraints at the bottom of the main sequence.
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rightsReproduced with permission from Astronomy & Astrophysics, © ESOen
dc.subjectBinaries: eclipsingen
dc.subjectStars: fundamental parametersen
dc.subjectStars: low-massen
dc.subjectStars: individual: 2MASS J01135129+3149097en
dc.subjectTechniques: radial velocitiesen
dc.subjectTechniques: photometricen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleThe EBLM project : II. A very hot, low-mass M dwarf in an eccentric and long-period, eclipsing binary system from the SuperWASP surveyen
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorPPARC - Now STFCen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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