Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST

Abstract

Eclipsing binaries provide a unique opportunity to determine fundamental stellar properties. In the era of wide-field cameras and all-sky imaging surveys, thousands of eclipsing binaries have been reported through light curve classification, yet their basic properties remain unexplored due to the extensive efforts needed to follow them up spectroscopically. In this paper we investigate three M2-M3 type double-lined eclipsing binaries discovered by cross-matching eclipsing binaries from the Catalina Sky Survey wtih spectroscopically classified M dwarfs from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope survey data release one and two. Because these three M dwarf binaries are faint, we further acquire radial velocity measurements using GMOS on the Gemini North telescope with R~40000, enabling us to determine the mass and radius of individual stellar components. By jointly fitting the light and radial velocity curves of these systems, we derive the mass and radius of the primary and secondary components of these three systems, in the range between 0.28-0.42 M_sun and 0.29-0.67 R_sun, respectively. Future observations with a high resolution spectrograph will help us pin down the uncertainties in their stellar parameters, and render these systems benchmarks to study m dwarfs, providing inputs to improving stellar models in the low mass regime, or establishing an empirical mass-radius relation for M dwarf stars.

arXiv commentRAA accepted. arXiv admin note: text overlap with arXiv:1701.05293

References in corpus (14)

• The Sloan Digital Sky Survey: Technical Summary
• First Results from the Catalina Real-time Transient Survey
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• The Occurrence Rate of Small Planets around Small Stars
• The Catalina Surveys Periodic Variable Star Catalog
• Stellar SEDs from 0.3-2.5 Microns: Tracing the Stellar Locus and Searching for Color Outliers in SDSS and 2MASS
• Eclipsing binaries in open clusters. II. V453 Cyg in NGC 6871
• The Sloan Digital Sky Survey Data Release 7 Spectroscopic M Dwarf Catalog I: Data
• An All-Sky Catalog of Bright M Dwarfs
• Probing the Outer Galactic halo with RR Lyrae from the Catalina Surveys
• The Mass-Radius(-Rotation?) Relation for Low-Mass Stars
• Mass-radius relation of low and very low-mass stars revisited with the VLTI
• Solutions for 10,000 Eclipsing Binaries in the Bulge Fields of OGLE II Using DEBiL
• Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)

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• Low-mass and sub-stellar eclipsing binaries in stellar clusters