J/A+A/666/A128 10 eclipsing binaries photometry and velocimetry (Graczyk+, 2022)
Surface brightness-colour relations of dwarf stars from detached eclipsing
binaries. I. Calibrating sample.
Graczyk D., Pietrzynski G., Galan C., Southworth J., Gieren W.,
Kaluszynski M., Zgirski B., Gallenne A., Gorski M., Hajdu G., Karczmarek P.,
Kervella P., Maxted P.F.L., Nardetto N., Narloch W., Pilecki B., Pych W.,
Rojas Garcia G., Storm J., Suchomska K., Taormina M., Wielgorski P.
<Astron. Astrophys. 666, A128 (2022)>
=2022A&A...666A.128G 2022A&A...666A.128G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry, uvby ; Radial velocities
Keywords: binaries: eclipsing - stars: distances -
stars: fundamental parameters - stars: distances
Abstract:
Surface brightness - colour relations (SBCRs) are very useful tools
for predicting the angular diameters of stars. They offer the
possibility to calculate very precise spectrophotometric distances by
the eclipsing binary method or the Baade-Wesselink method.
Double-lined Detached Eclipsing Binary stars (SB2 DEBs) with precisely
known trigonometric parallaxes allow for a calibration of SBCRs with
unprecedented precision. In order to improve such calibrations, it is
important to enlarge the calibration sample of suitable eclipsing
binaries with very precisely determined physical parameters. We
carefully chose a sample of ten SB2 DEBs in the solar neighbourhood
which contain inactive main-sequence components. The components have
spectral types from early A to early K. All systems have
high-precision parallaxes from the Gaia mission. We analysed high
precision ground- and space-based photometry simultaneously with the
radial velocity curves derived from HARPS spectra. We used spectral
disentangling to obtain the individual spectra of the components and
used these to derive precise atmospheric parameters and chemical
abundances. For almost all components, we derived precise surface
temperatures and metallicities. We derived absolute dimensions for 20
stars with an average precision of 0.2% and 0.5% for masses and radii,
respectively. Three systems show slow apsidal motion. One system, HD
32129, is most likely a triple system with a much fainter K6V
companion. Also three systems contain metallic-line components and
show strong enhancements of barium and ittrium. The components of all
systems compare well to the SBCR derived before from the detached
eclipsing binary stars. With a possible exception of HD 32129, they
can be used to calibrate SBCRs with a precision better than 1% with
available DR3 parallaxes.
Description:
Stromgren uvby photometry of UW LMi and V963 Cen are given. Radial
velocity measurements from HARPS spectra are presented to 10 eclipsing
binaries: GW Eri, HD 32129, UW LMi, QR Hya, V788 Cen, V338 Vir, V963
Cen, LX Mus, V362 Pav, CQ Ind.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 88 10 Basic data on the eclipsing binary stars studied
in the current work
table2.dat 54 1709 *Stromgren normalized ubvy photometry
table4.dat 49 163 Velocimetry of ten eclipsing binary stars
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Note on table2.dat: Unpublished photometry from Clausen et al.
(2001A&A...374...980C)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Eclipsing binary star name
11- 12 I2 h RAh Right ascension (J2000)
14- 15 I2 min RAm Right ascension (J2000)
17- 21 F5.2 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination sign (J2000)
27- 28 I2 arcmin DEm Declination sign (J2000)
30- 33 F4.1 arcsec DEs Declination sign (J2000)
35- 40 F6.3 mas plx Gaia-EDR3 parallax
42- 46 F5.3 mas e_plx Gaia-EDR3 parallax error
48- 52 F5.3 mag Bmag B magnitude
54- 58 F5.3 mag e_Bmag B magnitude error
60- 64 F5.3 mag Vmag V magnitude
66- 70 F5.3 mag e_Vmag V magnitude error
72- 77 F6.3 d Porb Orbital period
79- 86 A8 --- SpType Spectral type from SIMBAD database, refined
spectral types are given in Section 5.3
of the paper
88 A1 --- Phot [*] * indicates photometric data in table2
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Eclipsing binary star name (UW LMi or V963 Cen)
10- 22 F13.5 d Date Heliocentric Julian date (HJD)
24- 30 F7.5 --- Fu Normalized u-band flux
32- 38 F7.5 --- Fv Normalized v-band flux
40- 46 F7.5 --- Fb Normalized b-band flux
48- 54 F7.5 --- Fy Normalized y-band flux
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Eclipsing binary star name
10- 19 F10.5 d BJD Barycentric Julian date (BJD-2450000)
21- 28 F8.3 km/s RV1 Radial velocity of the primary star (1)
30- 34 F5.3 km/s e_RV1 Error of RV1
36- 43 F8.3 km/s RV2 Radial velocity of the secondary star (1)
45- 49 F5.3 km/s e_RV2 Error of RV2
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Note (1): Radial velocities are reduced to the solar system barycenter.
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Acknowledgements:
Dariusz Graczyk, darek(at)ncac.torun.pl
(End) Patricia Vannier [CDS] 31-Aug-2022