Double-lined Spectroscopic Binary Stars in the Radial Velocity Experiment Survey

Abstract

We devise a new method for the detection of double-lined binary stars in a sample of the Radial Velocity Experiment (RAVE) survey spectra. The method is both tested against extensive simulations based on synthetic spectra, and compared to direct visual inspection of all RAVE spectra. It is based on the properties and shape of the cross-correlation function, and is able to recover ~80% of all binaries with an orbital period of order 1 day. Systems with periods up to 1 year are still within the detection reach. We have applied the method to 25,850 spectra of the RAVE second data release and found 123 double-lined binary candidates, only eight of which are already marked as binaries in the SIMBAD database. Among the candidates, there are seven that show spectral features consistent with the RS CVn type (solar type with active chromosphere) and seven that might be of W UMa type (over-contact binaries). One star, HD 101167, seems to be a triple system composed of three nearly identical G-type dwarfs. The tested classification method could also be applicable to the data of the upcoming Gaia mission.

12 pages, 7 figures, 2 tables, accepted for publication in Astronomical Journal

References in corpus (20)

• MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• Accurate masses and radii of normal stars: modern results and applications
• The Radial Velocity Experiment (RAVE): first data release
• Towards Better Age Estimates for Stellar Populations: The Y^2 Isochrones for Solar Mixture
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• Stellar, Brown Dwarf, and Multiple Star Properties from Hydrodynamical Simulations of Star Cluster Formation
• ULySS: A Full Spectrum Fitting Package
• An extensive library of 2500-10500 Ang synthetic spectra
• The Radial Velocity Experiment (RAVE): second data release
• A catalog of chromospherically active binary stars (third edition)
• Estimation of the Tilt of the Stellar Velocity Ellipsoid from RAVE and Implications for Mass Models
• Is the sky falling? Searching for stellar streams in the local Milky Way disc in the CORAVEL and RAVE surveys
• Galactic kinematics with RAVE data: I. The distribution of stars towards the Galactic poles
• Diffuse interstellar bands in RAVE Survey spectra
• Distance determination for RAVE stars using stellar models
• The distance to the Pleiades from orbital solution of the double-lined eclipsing binary HD 23642
• An extensive library of synthetic spectra covering the far red, RAVE and GAIA wavelength ranges
• RAVE spectroscopy of luminous blue variables in the Large Magellanic Cloud
• Asiago eclipsing binaries program. II. V505 Per

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