J/A+A/502/253 V636 Cen radial velocities curves (Clausen+, 2009)
Absolute dimensions of solar-type eclipsing binaries.
II. V636 Centauri: A 1.05M☉ primary with an active, cool,
oversize 0.85M☉ secondary.
Clausen J.V., Bruntt H., Claret A., Larsen A., Andersen J., Nordstrom B.,
Gimenez A.
<Astron. Astrophys. 502, 253 (2009)>
=2009A&A...502..253C 2009A&A...502..253C
ADC_Keywords: Binaries, eclipsing ; Radial velocities
Keywords: stars: evolution - stars: fundamental parameters - stars: abundances -
stars: activity - stars: binaries: eclipsing -
techniques: spectroscopic
Abstract:
The influence of stellar activity on the fundamental properties of
stars around and below 1M☉ is not well understood. Accurate
mass, radius, and abundance determinations from 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
solar-type detached eclipsing binary V636Cen, and to perform a
detailed comparison with results from recent stellar evolutionary
models.
uvby light curves and uvbyβ standard photometry were obtained
with the Stroemgren Automatic Telescope, radial velocity observations
with the CORAVEL spectrometer, and high-resolution spectra with the
FEROS spectrograph, all at ESO, La Silla. State-of-the-art methods
were applied for the photometric and spectroscopic analyses.
Description:
Radial velocities of V636 Cen and residuals from the final
spectroscopic orbit.
Objects:
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RA (2000) DE Designation(s)
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14 16 57.9 -49 56 42 V636 Cen = HD 124784
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 74 39 Radial velocities of V636 Cen and residuals from
the final spectroscopic orbit
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See also:
J/A+A/487/1081 : uvby photometry of 6 eclipsing binaries (Clausen+, 2008)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD(p) ? Heliocentric Julian Date primary component
13- 18 F6.4 --- Phase(p) ? Orbital phase, primary component
20- 25 F6.2 km/s RV(p) ? Radial velocity, primary component
27- 30 F4.2 km/s e_RV(p) ? Internal velocity error, primary component
32- 36 F5.2 km/s O-C(p) ? Observed-calculated velocity residual,
primary component
38- 48 F11.3 d HJD(s) Heliocentric Julian Date secondary component
50- 55 F6.4 --- Phase(s) Orbital phase, secondary component
57- 63 F7.2 km/s RV(s) Radial velocity, secondary component
65- 68 F4.2 km/s e_RV(s) Internal velocity error, secondary component
70- 74 F5.2 km/s O-C(s) Observed-calculated velocity residual,
secondary component
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Acknowledgements:
jvc(at)astro.ku.dk
References:
Clausen et al., Paper I 2001A&A...374..980C 2001A&A...374..980C
(End) J.V. Clausen [Niels Bohr Inst., Copenhagen], P. Vannier [CDS] 22-May-2009