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J/A+A/600/A55       Refined Analysis of T-Cyg1-12664    (Iglesias-Marzoa+, 2017)

A refined analysis of the low-mass eclipsing binary system T-Cyg1-12664. Iglesias-Marzoa R., Lopez-Morales M., Arevalo M.J., Coughlin J.L., Lazaro C. <Astron. Astrophys. 600, A55 (2017)> =2017A&A...600A..55I (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI ; Radial velocities Keywords: stars: fundamental parameters - stars: low-mass - binaries: eclipsing - binaries: spectroscopic Abstract: The observational mass-radius relation of main sequence stars with masses between ∼0.3 and 1.0M reveals deviations between the stellar radii predicted by models and the observed radii of stars in detached binaries. We generate an accurate physical model of the low-mass eclipsing binary T-Cyg1-12664 in the Kepler mission field to measure the physical parameters of its components and to compare them with the prediction of theoretical stellar evolution models. We analyze the Kepler mission light curve of T-Cyg1-12664 to accurately measure the times and phases of the primary and secondary eclipse. In addition, we measure the rotational period of the primary component by analyzing the out-of-eclipse oscillations that are due to spots. We accurately constrain the effective temperature of the system using ground-based absolute photometry in B, V, RC, and IC. We also obtain and analyze VRCIC differential light curves to measure the eccentricity and the orbital inclination of the system, and a precise Teff ratio. From the joint analysis of new radial velocities and those in the literature we measure the individual masses of the stars. Finally, we use the PHOEBE code to generate a physical model of the system. Description: We generate an accurate physical model of the low-mass eclipsing binary T-Cyg1-12664 in the Kepler mission field to measure the physical parameters of its components and to compare them with the prediction of theoretical stellar evolution models. We analyze the Kepler mission light curve of T-Cyg1-12664 to accurately measure the times and phases of the primary and secondary eclipse. In addition, we measure the rotational period of the primary component by analyzing the out-of-eclipse oscillations in the light curve due to spots. We accurately constrain the effective temperature of the system using ground-based absolute photometry in B, V, RC, and IC. We also obtain and analyze V RC IC differential light curves to measure the eccentricity and the orbital inclination of the system, and a precise Teff ratio. From the joint analysis of new radial velocities and those in the literature we measure the individual masses of the stars. Finally, the PHOEBE code is used to build a physical model of the system. We observed T-Cyg1-12664 with the CAMELOT camera at the IAC80 telescope in Tenerife, Spain, in VRCIC bands, over 14 nights, between 2009-04-04 and 2010-10-01 UT (JD2454936.6-JD2455471.5), when eclipses occurred. We also requested a routinary observation program at the same telescope to sample out-of-eclipse phases. CAMELOT is equipped with a back-illuminated E2V 2048x2048 sensor with squared 13.5um pixels, which results in a plate scale of 0.304'/pix and a 10.4'x10.4' field of view. Objects: --------------------------------------------------------------------- RA (ICRS) DE Designation(s) --------------------------------------------------------------------- 19 51 39.82 +48 19 55.4 [DCO2008] T-Cyg1-12664 = KIC 10935310 --------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 24 47679 Detrended Kepler light curve table2.dat 38 561 VRcIc differential photometry from IAC80 table3.dat 27 30 Radial velocity measurements from APO and KPNO table10.dat 25 439 Eclipse timings from Kepler photometry, IAC80 and literature
See also: J/AJ/135/850 : Properties of eclipsing binaries found in TrES (Devor+, 2008) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 13 F13.5 d BJD Baricentric Julian Date 15- 24 F10.8 --- Flux Normalized flux in the Kepler band
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 17 F17.9 d BJD Baricentric Julian Date 19- 23 F5.3 mag dmag Differential magnitude 25- 29 F5.3 mag e_dmag Error in differential magnitude 31- 35 F5.3 --- Airmass Airmass 37- 38 A2 --- Filter [V Rc Ic] Filter
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d BJD Baricentric Julian Date 16- 21 F6.2 km/s RV Radial velocity 23- 27 F5.2 km/s e_RV Error in radial velocity
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
1- 13 F13.5 d BJD Baricentric Julian Date of eclipse 15- 21 F7.5 d e_BJD Error in BJD 23 A1 --- Type [PS] Minimum type (P or S) 25 A1 --- Ref Source of the measurement (1)
Note (1): References as follows: 1 = Devor et al. (2008, Cat. J/AJ/135/850), discovery paper 2 = IAC80 data 3 = Kepler data 4 = Cakirli et al. (2013MNRAS.429...85C), first analysis of this system
Acknowledgements: Ramon Iglesias Marzoa, rimarzoa(at)yahoo.es
(End) Patricia Vannier [CDS] 24-Jan-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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