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.
<Astron. Astrophys. 572, A50 (2014)>
=2014A&A...572A..50G 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☉ has a large radius
(1.378±0.058R☉) indicating that the system is quite old,
∼9.5Gyr. The M-dwarf secondary mass of 0.186±0.010M☉ and
radius of 0.209±0.011R☉ 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:
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RA (2000) DE Designation(s)
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01 13 51.29 +31 49 09.7 J0113+31 = 1SWASP J011351.29+314909.7
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File Summary:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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)
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Note (1): Bands are WASP, optical NITES, OED I-band, BYU I-band and KPNO J-band.
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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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
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Acknowledgements:
Yilen Gomez Maqueo Chew, y.gomez(at)warwick.ac.uk
References:
Triaud et al., Paper I, 2013A&A...549A..18T 2013A&A...549A..18T, Cat. J/A+A/549/A18
(End) Yilen Gomez Maqueo Chew [Warwick], Patricia Vannier [CDS] 30-Sep-2014