J/A+A/572/A50 J0113+31 light + velocity curves (Gomez Maqueo Chew+, 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. Gomez Maqueo Chew Y., Morales J.C., Faedi F., Garcia-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., Montanes-Rodriguez P. =2014A&A...572A..50G ================================================================================ ADC_Keywords: Binaries, eclipsing ; Stars, M-type ; Photometry ; Radial velocities Keywords: binaries: eclipsing - stars: fundamental parameters - stars: low mass - stars: individual: 2MASS J01135129+3149097 - techniques: radial velocities - techniques: photometric Abstract: We derive the fundamental properties of 1SWASP J011351.29+314909.7 (J0113+31), a metal-poor (-0.40+/-0.04dex), eclipsing binary in an eccentric orbit (~0.3) with an orbital period of 14.277d. 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. The primary component with a mass of 0.945+/-0.045M_{sun}_ has a large radius (1.378+/-0.058R_{sun}_) indicating that the system is quite old, ~9.5Gyr. The M-dwarf secondary mass of 0.186+/-0.010M_{sun}_ and radius of 0.209+/-0.011R_{sun}_ 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+/-42K, which is ~600K hotter than predicted by theoretical models. We present the WASP light curve, the optical follow-up light curves, the near-infrared light curve of the secondary eclipse, and the radial velocity measurements of J0113+31. Objects: ----------------------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------------------- 01 13 51.29 +31 49 09.7 J0113+31 = 1SWASP J011351.29+314909.7 ----------------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table5.dat 36 7968 SuperWASP light curve of J0113+31 table6.dat 45 3490 NITES optical light curve of primary eclipse table7.dat 42 239 OED I-band light curve of primary eclipse table8.dat 42 2199 BYU I-band light curve of primary eclipse table9.dat 43 1564 FLAMINGOS J-band light curve of secondary eclipse table10.dat 37 28 Radial velocity measurements of J0113+31 -------------------------------------------------------------------------------- See also: J/A+A/549/A18 : WASP-30 and J1219-39 light + velocity curves (Triaud+, 2013) Byte-by-byte Description of file: table[56789].dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 14 F14.6 d HJD Heliocentric Julian date 16- 23 F8.5 mag dmag Differential magnitude 25- 31 F7.5 mag e_dmag Photometric uncertainty 33- 45 A13 --- Band Band for magnitude (1) -------------------------------------------------------------------------------- Note (1): Bands are WASP, optical NITES, OED I-band, BYU I-band and KPNO J-band. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table10.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 13 F13.5 d HJD Heliocentric Julian date 15- 21 F7.4 km/s RV Radial Velocity measurement 23- 28 F6.4 km/s e_RV Uncertainty in radial velocity 30- 37 A8 -- Inst Telescope/Instrument -------------------------------------------------------------------------------- Acknowledgements: Yilen Gomez Maqueo Chew, y.gomez(at)warwick.ac.uk References: Triaud et al., Paper I, 2013A&A...549A..18T, Cat. J/A+A/549/A18 ================================================================================ (End) Yilen Gomez Maqueo Chew [Warwick], Patricia Vannier [CDS] 30-Sep-2014