The Araucaria project: High-precision orbital parallaxes and masses of binary stars. I. VLTI/GRAVITY observations of ten double-lined spectroscopic binaries

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 $1\sigma$ 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 $\sim 0.02$% 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.

arXiv commentAccepted for publication in A&A

References in corpus (85)

• emcee: The MCMC Hammer
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Gaia Data Release 3: Summary of the content and survey properties
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• The Dartmouth Stellar Evolution Database
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• A large stellar evolution database for population synthesis studies. I. Scaled solar models and isochrones
• Accurate masses and radii of normal stars: modern results and applications
• Gaia Early Data Release 3: The astrometric solution
• A new generation of PARSEC-COLIBRI stellar isochrones including the TP-AGB phase
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
• An absolutely calibrated effective temperature scale from the InfraRed Flux Method
• Automated data reduction workflows for astronomy
• An eclipsing binary distance to the Large Magellanic Cloud accurate to 2 per cent
• A distance to the Large Magellanic Cloud that is precise to one per cent
• SB9: The Ninth Catalogue of Spectroscopic Binary Orbits
• The effective temperature scale of FGK stars. II. Teff : color : [Fe/H] calibrations
• The Geneva-Copenhagen Survey of the Solar neighbourhood III. Improved distances, ages, and kinematics
• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
• A new implementation of the infrared flux method using the 2MASS catalogue
• A library of high resolution synthetic stellar spectra from 300nm to 1.8 micron with solar and alpha-enhanced composition
• Astrometric exoplanet detection with Gaia
• PIONIER: a 4-telescope visitor instrument at VLTI
• Parallax Systematics and Photocenter Motions of Benchmark Eclipsing Binaries in Gaia EDR3
• Improved Color-Temperature Relations and Bolometric Corrections for Cool Stars
• First Resolved Images of the Eclipsing and Interacting Binary Beta Lyrae
• Stellar and substellar companions from Gaia EDR3 -- Proper motion anomaly and resolved common proper motion pairs
• Effective temperature scale and bolometric corrections from 2MASS photometry
• A new calibration of Galactic Cepheid Period-Luminosity relations from B to K bands, and a comparison to LMC PL relations
• Low-Mass Tertiary Companions to Spectroscopic Binaries I: Common Proper Motion Survey for Wide Companions using 2MASS
• A distance determination to the Small Magellanic Cloud with an accuracy of better than 2 percent based on late-type eclipsing binary stars
• 3D maps of interstellar dust in the Local Arm: using $Gaia$, 2MASS and APOGEE-DR14
• Improved GRAVITY astrometric accuracy from modeling of optical aberrations
• SearchCal: a Virtual Observatory tool for searching calibrators in optical long baseline interferometry. I: The bright object case
• Abundances in the Local Region II: F, G and K Dwarfs and Subgiants
• In the Shadow of the Transiting Disk: Imaging epsilon Aurigae in Eclipse
• Gaia Data Release 3. Astrometric binary star processing
• Solving the discrepancy between the seismic and photospheric solar radius
• Pseudomagnitudes and Differential Surface Brightness: Application to the apparent diameter of stars
• The dependence of convective core overshooting on stellar mass: Additional binary systems and improved calibration
• The dependence of convective core overshooting on stellar mass: semi-empirical determination using the diffusive approach with two different element mixtures
• Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227
• High precision orbital and physical parameters of double-lined spectroscopic binary stars - HD78418, HD123999, HD160922, HD200077 and HD210027
• The Araucaria Project. Determination of the LMC Distance from Late-Type Eclipsing Binary Systems: I. OGLE-051019.64-685812.3
• SP_Ace: a new code to derive stellar parameters and elemental abundances
• Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 - I. Binarity from proper motion anomaly
• Observations of Binary Stars with the Differential Speckle Survey Instrument. VI. Measures During 2014 at the Discovery Channel Telescope
• Imaging the Algol Triple System in H Band with the CHARA Interferometer
• Mass and p-factor of the type II Cepheid OGLE-LMC-T2CEP-098 in a binary system
• Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 -- II. Resolved common proper motion pairs
• Statistical errors and systematic biases in the calibration of the convective core overshooting with eclipsing binaries. A case study: TZ Fornacis
• The Araucaria Project: High-precision Cepheid astrophysics from the analysis of variables in double-lined eclipsing binaries
• A geometrical 1% distance to the short-period binary Cepheid V1334 Cygni
• Multiplicity of Galactic Cepheids from long-baseline interferometry I. CHARA/MIRC detection of the companion of V1334 Cygni
• The Araucaria Project: High-precision orbital parallax and masses of the eclipsing binary TZ~Fornacis
• High-mass pulsators in eclipsing binaries observed using TESS
• Fundamental properties of red-clump stars from long-baseline H-band interferometry
• The Araucaria Project: High-precision orbital parallax and masses of eclipsing binaries from infrared interferometry
• Observations of Binary Stars with the Differential Speckle Survey Instrument. IX. Observations of Known and Suspected Binaries, and a Partial Survey of Be Stars
• Multiplicity of Galactic Cepheids from long-baseline interferometry. II. The Companion of AX Circini revealed with VLTI/PIONIER
• Physical Orbit for Lambda Virginis and a Test of Stellar Evolution Models
• Absolute parameters for AI Phoenicis using WASP photometry
• Masses of the components of SB2 binaries observed with Gaia. IV. Accurate SB2 orbits for 14 binaries, and masses of 3 binaries
• The surface brightness - colour relations based on eclipsing binary stars and calibrated with Gaia EDR3
• New visual companions of solar-type stars within 25 pc
• Speckle interferometry of secondary components in nearby visual binaries
• A solar twin in the eclipsing binary LL Aqr
• Tracking the spin axes orbital alignment in selected binary systems - Torun Rossiter-McLaughlin effect survey
• Masses and age of the Chemically Peculiar double-lined binary $\chi$~Lupi
• ARMADA I: Triple Companions Detected in B-Type Binaries alpha Del and nu Gem
• Carbon and Oxygen abundances across the Hertzsprung gap
• Masses of the components of SB2 binaries observed with Gaia. I. Selection of the sample and mass ratios of 20 new SB2s discovered with Sophie
• Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - VI. AK Fornacis - a rare, bright K-type eclipsing binary
• Precision Orbit of $\delta$ Delphini and Prospects for Astrometric Detection of Exoplanets
• Spectroscopic orbits of ten nearby solar-type dwarfs
• Visual Orbits of Spectroscopic Binaries with the CHARA Array. III. HD 8374 and HD 24546
• Spectroscopic orbits of nearby solar-type dwarfs. II
• The Araucaria Project. Precise physical parameters of the eclipsing binary IO Aqr
• Surface brightness-colour relations of dwarf stars from detached eclipsing binaries -- I. Calibrating sample
• Physical parameters and $\pm$0.2% parallax of the detached eclipsing binary V923 Scorpii

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