J/MNRAS/482/5379 Physical & orbital properties of detached EBs (Garrido+, 2019)
The radius inflation problem in short-period low-mass binaries:
a large sample analysis.
Garrido H.E., Cruz P., Diaz M.P., Aguilar J.F.
<Mon. Not. R. Astron. Soc. 482, 5379-5388 (2019)>
=2019MNRAS.482.5379G 2019MNRAS.482.5379G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing; Stars, late-type; Photometry ;
Effective temperatures ; Stars, masses ; Stars, diameters
Keywords: technique: photometric - binaries: eclipsing - stars: late-type -
Abstract:
We have identified and photometrically characterized a sample of 230
detached close-orbiting eclipsing binaries with low-mass main-sequence
components (LMMS) from the Catalina Sky Survey. These low-mass stars
have both components below 1.0M☉, orbital periods shorter than
2-days and effective temperatures below to 5720K. The adopted method
provided a robust estimate of stellar parameters (as mass and
fractional radius) by using only light curves and photometric colors,
since no spectroscopic information was available for these objects.
Each light curve was modeled with the JKTEBOP code together with an
asexual genetic algorithm to obtain the most coherent values for the
fitted parameters. This new sample of short-period detached eclipsing
binaries, with low-mass main-sequence stars (LMMS) considerably
increases the number of previously known systems. Which allows us to
derive masses and radii in statistically significant samples for the
investigation of the correlation between radius inflation and other
basic stellar parameters.
Description:
We present the orbital and physical parameters for our complete sample
of 230 detached EBs found in the Catalina Sky Survey. The derived
effective temperatures and masses for the individuals components were
obtained from a grid of composite synthetic and observed colors, as
described in detail in sect. 3 of the paper. The orbital parameters
and fractional radii, were obtained from the light curve modeling as
described in sect. 4 of the paper. The last two columns show the radii
obtained by using Kepler's third law.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 160 230 Orbital and physical parameters for our complete
sample of 230 detached EBs identified in the
Catalina Sky Survey
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See also:
J/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 13 I13 --- CatalinaID Catalina identification number
15- 18 I4 K T1 Primary effective temperature
20- 22 I3 K e_T1 Statistical error on primary temperature
24- 27 I4 K T2 Secondary effective temperature
29- 31 I3 K e_T2 Statistical err on secondary temperature
33- 37 F5.3 Msun M1 Primary mass
39- 43 F5.3 Msun e_M1 Statistical error on primary mass
45- 49 F5.3 Msun M2 Secondary mass
51- 55 F5.3 Msun e_M2 Statistical error on secondary mass
57- 61 F5.3 --- J Surface brightness ratio
63- 67 F5.3 --- e_J Error on surface brightness ratio
69- 72 F4.1 deg i Orbital inclination
74- 76 F3.1 deg e_i Error on orbital inclination
78- 88 F11.9 d P Orbital period
90-100 F11.5 d T0 Time of primary minimum in MJD-2450000
102-106 F5.3 --- R1/a Primary radius in units of separation
108-112 F5.3 --- e_R1/a Error on primary radius
114-118 F5.3 --- R2/a Secondary radius in units of separation
120-124 F5.3 --- e_R2/a Error on secondary radius
126-130 F5.3 --- e Eccentricity
132-136 F5.3 --- e_e Error on eccentricity
138-143 F6.2 deg w Longitude of periastron
145-148 F4.1 deg e_w ?=- Error on longitude of periastron
150-154 F5.3 Rsun R1 Primary radius
156-160 F5.3 Rsun R2 Secondary radius
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Acknowledgements:
Patricia Cruz, pcruz.astro(at)gmail.com
(End) Hernan Garrido [ECCI], Patricia Vannier [CDS] 02-Oct-2018