Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST
Lee ChienHsiu1; Lin ChienCheng2
AbstractEclipsing 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 with 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 similar to 4000, 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- 0.42M. and 0.29-0.67 R., 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.
KeywordSTARS (stars:) binaries eclipsing
Funding Project[National Development and Reform Commission] ; [National Aeronautics and Space Administration] ; [U.S.-National Science Foundation]
Document Type期刊论文
Recommended Citation
GB/T 7714
Lee ChienHsiu,Lin ChienCheng. Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(2).
APA Lee ChienHsiu,&Lin ChienCheng.(2017).Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(2).
MLA Lee ChienHsiu,et al."Double-lined M dwarf eclipsing binaries from Catalina Sky Survey and LAMOST".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.2(2017).
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