Visual Orbits of Spectroscopic Binaries with the CHARA Array. II. The eclipsing binary HD 185912

Abstract

We present the visual orbit of the double-lined eclipsing binary, HD 185912, from long baseline interferometry with the CHARA Array. We also obtain echelle spectra from the Apache Point observatory to update the spectroscopic orbital solution and analyze new photometry from Burggraaff et al. to model the eclipses. By combining the spectroscopic and visual orbital solutions, we find component masses of M1 = 1.361 +/- 0.004 Msun and M2 = 1.331 +/- 0.004 Msun, and a distance of d = 40.75 +/- 0.30 pc from orbital parallax. From the light curve solution, we find component radii of R1 = 1.348 +/- 0.016 Rsun and R2 = 1.322 +/- 0.016 Rsun. By comparing these observed parameters to stellar evolution models, we find that HD 185912 is a young system near the zero age main sequence with an estimated age of 500 Myr.

Accepted for publication in the Astronomical Journal. 13 pages, 8 figures. (updated references)

References in corpus (34)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Gaia mission
• Modules for Experiments in Stellar Astrophysics (MESA)
• The Transiting Exoplanet Survey Satellite
• Validation of the new Hipparcos reduction
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
• Evolution of binary stars and the effect of tides on binary populations
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• Accurate masses and radii of normal stars: modern results and applications
• BANYAN. XI. The BANYAN $\Sigma$ multivariate Bayesian algorithm to identify members of young associations within 150 pc
• First Results from the CHARA Array. II. A Description of the Instrument
• Tertiary companions to close spectroscopic binaries
• Evidence for a systematic offset of -80 micro-arcseconds in the Gaia DR2 parallaxes
• A Robust Measure of Tidal Circularization in Coeval Binary Populations: The solar-type spectroscopic Binary Population in The Open Cluster M35
• Eclipsing Binary Stars as Benchmarks for Trigonometric Parallaxes in the Gaia Era
• Main-Sequence Effective Temperatures from a Revised Mass-Luminosity Relation Based on Accurate Properties
• An Improved Method for Estimating the Masses of Stars with Transiting Planets
• 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
• Multi-order TODCOR: application to observations taken with the CORALIE echelle spectrograph
• The spin axes orbital alignment of both stars within the eclipsing binary system V1143Cyg using the Rossiter-McLaughlin effect
• Orbits, Distance, and Stellar Masses of the Massive Triple Star Sigma Orionis
• Observations of Binary Stars with the Differential Speckle Survey Instrument. VII. Measures from 2010 September to 2012 February at the WIYN Telescope
• First visual orbit for the prototypical colliding-wind binary WR 140
• On the anomaly of Balmer line profiles of A-type stars. Fundamental binary systems
• Empirical relations for the accurate estimation of stellar masses and radii
• A multi-instrument and multi-wavelength high angular resolution study of MWC614: quantum heated particles inside the disk cavity
• Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)
• Stellar Astrophysics with a Dispersed Fourier Transform Spectrograph. II. Orbits of Double-lined Spectroscopic Binaries
• Visual Orbits of Spectroscopic Binaries with the CHARA Array. I. HD 224355
• Photometric Observation and Apsidal motion Study of V1143 Cyg

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