J/A+A/672/A119 10 double-lined spectroscopic binaries data (Gallenne+, 2023)
The Araucaria project: High-precision orbital parallaxes and masses of binary
stars I. VLTI/GRAVITY observations of ten double-lined spectroscopic binaries.
Gallenne A., Merand A., Kervella P., Graczyk D., Pietrzynski G., Gieren W.,
Pilecki B.
<Astron. Astrophys., 672, A119 (2023)>
=2023A&A...672A.119G 2023A&A...672A.119G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Binaries, orbits ; Stars, masses ;
Parallaxes, spectroscopic ; Optical
Keywords: binaries: general - binaries: spectroscopic -
techniques: high angular resolution - astrometry - binaries: close -
techniques: radial velocities
Abstract:
We aim to measure very precise and accurate model-independent masses
and distances of detached binary stars. Precise masses at the <1%
level are necessary to test and calibrate stellar interior and
evolution models, while precise and independent orbital parallaxes are
essential to check for the next Gaia data releases.
We combined RV measurements with interferometric observations to
determine orbital and physical parameters of ten double-lined
spectroscopic systems. We report new relative astrometry from
VLTI/GRAVITY and, for some systems, new VLT/UVES spectra to determine
the radial velocities of each component.
We measured the distance of ten binary systems and the mass of their
components with a precision as high as 0.03% (average level 0.2%).
They are combined with other stellar parameters (effective
temperatures, radii, flux ratios, etc.) to fit stellar isochrones and
determine their evolution stage and age. We also compared our orbital
parallaxes with Gaia and showed that half of the stars are beyond
1σ with our orbital parallaxes; although, their RUWE is below
the frequently used cutoff of 1.4 for reliable Gaia astrometry. By
fitting the telluric features in the GRAVITY spectra, we also
estimated the accuracy of the wavelength calibration to be ∼0.02% in
high and medium spectral resolution modes.
We demonstrate that combining spectroscopic and interferometric
observations of binary stars provides extremely precise and accurate
dynamical masses and orbital parallaxes. As they are detached
binaries, they can be used as benchmark stars to calibrate stellar
evolution models and test the Gaia parallaxes.
Description:
We have reported new interferometric and spectroscopic observations of
double-lined binary systems. We simultaneously fitted the astrometry
and RVs to obtain extremely precise and accurate masses and distances
for ten systems. We reached uncertainties as low as 0.03% and an
average precision of ∼0.2%.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 7 Stellar atmospheric parameters of the hottest
component used for the spectral templates to
estimate the radial velocities
table6.dat 247 10 Best-fit orbital elements and parameters for
our binary systems
table7.dat 139 20 Stellar parameters used for the age
determinations, together with our fitted and
adopted age for the systems
tableb1.dat 96 113 Relative astrometric position of the secondary
component for all systems
tablec1.dat 56 195 Measured radial velocities for all stars
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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- 9 A9 --- System System name
11- 14 I4 K Teff Effective temperature
16- 19 F4.2 [cm/s] logg Surface gravity
21- 25 F5.2 [-] [Fe/H] Metallicity
27- 85 A59 --- Ref Reference
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- System System name
11- 21 F11.7 d Prob Orbital period
23- 31 F9.7 d e_Prob Orbital period error
33- 44 F12.4 d Tp Time passage through periastron
46- 51 F6.4 d e_Tp Time passage through periastron error
53- 59 F7.5 --- e Eccentricity
61- 67 F7.5 --- e_e Eccentricity error
69- 74 F6.3 km/s K1 Radial velocity semi-amplitude of the primary
76- 80 F5.3 km/s e_K1 Radial velocity semi-amplitude of the
primary error
82- 86 F5.2 km/s K2 Radial velocity semi-amplitude of the
secondary
88- 91 F4.2 km/s e_K2 Radial velocity semi-amplitude of the
secondary error
93- 99 F7.3 km/s gamma1 Systemic velocity of the primary
101-105 F5.3 km/s e_gamma1 Systemic velocity of the primary error
107-111 F5.2 km/s gamma2 ?=- Systemic velocity of the secondary
114-117 F4.2 km/s e_gamma2 ? Systemic velocity of the secondary error
119-125 F7.3 deg omega Argument of periastron
127-133 F7.3 deg e_omega Argument of periastron error
135-140 F6.2 deg Omega Position angle of the ascending node
142-145 F4.2 deg e_Omega Position angle of the ascending node error
147-152 F6.3 mas a Angular semi-major axis
154-158 F5.3 mas e_a Angular semi-major axis error
160-165 F6.4 AU al Linear semi-major axis
167-172 F6.4 AU e_al Linear semi-major axis error
174-180 F7.3 deg incl Orbital inclination
182-186 F5.3 deg e_incl Orbital inclination error
188-194 F7.5 Msun M1 Mass of the primary
196-202 F7.5 Msun e_M1 Mass of the primary error
204-210 F7.5 Msun M2 Mass of the secondary
212-218 F7.5 Msun e_M2 Mass of the secondary error
220-227 F8.4 pc Dist Distance
229-234 F6.4 pc e_Dist Distance error
236-241 F6.3 mas plx Parallax
243-247 F5.3 mas e_plx Parallax error
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- System System name
11 A1 --- Star [A/B] Star multiplicity index
13- 17 F5.3 Rsun Rad Radius (1)
19- 23 F5.3 Rsun e_Rad Radius error (1)
25- 28 I4 K Teff Effective temperature
30- 32 I3 K e_Teff Effective temperature error
34- 39 F6.3 [Lsun] logL Luminosity
41- 45 F5.3 [Lsun] e_logL Luminosity error
47- 51 F5.2 [-] [Fe/H] ? Metallicity
53- 56 F4.2 [-] e_[Fe/H] ? Metallicity error
58- 63 F6.3 mag KMAG Absolute K magnitude
65- 69 F5.3 mag e_KMAG Absolute K magnitude error
71- 75 F5.3 mag E(B-V) ? Reddenning
77- 81 F5.3 mag e_E(B-V) ? Reddenning error
83- 87 A5 --- Ref Reference(s) (2)
89- 93 F5.3 Gyr tparsec ? Age estimated with PARSEC
95- 99 F5.3 Gyr e_tparsec ? Age estimated with PARSEC error
101-104 F4.2 Gyr tbasti ? Age estimated with BaTSI
106-109 F4.2 Gyr e_tbasti ? Age estimated with BaTSI error
111-114 F4.2 Gyr tmist ? Age estimated with MIST
116-119 F4.2 Gyr e_tmist ? Age estimated with MIST error
121-124 D4.2 Gyr tdsep ? Age estimated with DSEP
126-129 F4.2 Gyr e_tdsep ? Age estimated with DSEP error
131-134 F4.2 Gyr tavg ? Average age from the best fitted models
(see text)
136-139 F4.2 Gyr e_tavg ? Average age error
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Note (1): Values from the literature were re-scaled according to our measured
linear semi-major axis.
Note (2): References as follows:
1 = This work
2 = Helminiak et al. (2014A&A...567A..64H 2014A&A...567A..64H)
3 = Kiefer et al. (2018MNRAS.474..731K 2018MNRAS.474..731K, Cat. J/MNRAS/474/731)
4 = Graczyk et al. (2016A&A...594A..92G 2016A&A...594A..92G)
5 = Griffin (2002AJ....123..988G 2002AJ....123..988G)
6 = Graczyk et al. (2022A&A...666A.128G 2022A&A...666A.128G, Cat. J/A+A/666/A128)
7 = Luck (2017AJ....153...21L 2017AJ....153...21L, Cat. J/AJ/153/21)
8 = Boeche & Grebel (2016A&A...587A...2B 2016A&A...587A...2B, Cat. J/A+A/587/A2)
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- System System name
11- 20 A10 "date" Obs.date Observation date
22- 30 F9.3 d MJD Modified Julian date
32- 42 A11 --- Baselines Baselines
44- 49 A6 --- SpRes Spectral resolution
51 I1 --- Cal Calibrator number (in table D1)
53- 58 F6.3 mas DRA Separation in right ascension
60- 66 F7.3 mas DDE Separation in declination
68- 73 F6.1 deg sPA 1σ error position angle
75- 79 F5.3 mag smaj 1σ error major axis
81- 85 F5.3 mas smin 1σ error minor axis
87- 91 F5.2 % f Flux ratio
93- 96 F4.2 % e_f ? Flux ratio error (1)
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Note (1): Values without errors were kept fixed.
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Byte-by-byte Description of file: tablec1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- System System name
11- 21 F11.5 d MJD Modified Julian date
23- 29 F7.3 km/s V1 Velocity of A component
31- 35 F5.3 km/s e_V1 Velocity of A component error
37- 43 F7.3 km/s V2 velocity of B component
45- 49 F5.3 km/s e_V2 Velocity of B component error
51- 56 A6 --- Inst Instrument
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 14-Aug-2023