J/A+A/511/A22 EW Ori differential uvby light curves (Clausen+, 2010)
Absolute dimensions of solar-type eclipsing binaries.
III. EW Orionis. Stellar evolutionary models tested by a G0 V system.
Clausen J.V., Bruntt H., Olsen E.H., Helt B.E., Claret A.
<Astron. Astrophys. 511, A22 (2010)>
=2010A&A...511A..22C 2010A&A...511A..22C
ADC_Keywords: Binaries, eclipsing ; Photometry, uvby
Keywords: stars: evolution - stars: fundamental parameters - stars: abundances -
binaries: eclipsing - techniques: photometric -
techniques: spectroscopic
Abstract:
Recent studies of inactive and active solar-type binaries suggest that
chromospheric activity, and its effect on envelope convection, is
likely to cause significant radius and temperature discrepancies.
Accurate mass, radius, and abundance determinations from additional
solar-type binaries exhibiting various levels of activity are needed
for a better insight into the structure and evolution of these stars.
We aim to determine absolute dimensions and abundances for the G0 V
detached eclipsing binary EW Ori, and to perform a detailed
comparison with results from recent stellar evolutionary models.
Description:
uvby light curves for EW Ori were obtained with the Stroemgren
Automatic Telescope.
Objects:
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RA (2000) DE Designation(s)
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05 20 09.1 +02 02 40 EW Ori = HD 287727
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table11.dat 71 624 uvby light curves for EW Ori
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See also:
J/A+A/502/253 : V636 Cen radial velocities curves (Clausen+, 2009)
Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
16- 22 F7.5 --- Phase Orbital phase
25- 29 F5.3 mag Dymag y differential magnitude
32- 36 F5.3 mag Db-y b-y differential colour index
38- 43 F6.3 mag Dm1 m1 differential colour index
45- 50 F6.3 mag Dc1 c1 differential colour index
53- 57 F5.3 mag Dbmag b differential magnitude
60- 64 F5.3 mag Dvmag v differential magnitude
67- 71 F5.3 mag Dumag u differential magnitude
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Acknowledgements:
J.V. Clausen, jvc(at)astro.ku.dk
References:
Clausen et al., Paper I 2001A&A...374..980C 2001A&A...374..980C
Clausen et al., Paper II 2009A&A...502..253C 2009A&A...502..253C, Cat. J/A+A/502/253
(End) J.V. Clausen [Niels Bohr Inst. Copenhagen], P. Vannier [CDS] 18-Dec-2009