A Statistical Survey of the G-type Eclipsing Binaries from the Kepler and Lamost Observations
Li-Ching Huang1*, Han-Yuan Chang1, Yihan Song2, Ali Luo2, Wing-Huen Ip1
1Institute of Astronomy, National Central University, Chungli, Taiwan
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
* presenting author:Li-Ching Huang, email:lchuang@astro.ncu.edu.tw
The Kepler space telescope observed more than 2000 eclipsing binary systems (EBs) between 2009 and 2013. According to the effective temperature measurements by Huber et al. (2014, ApJS, 211, 1). 32 isolated and detached EBs of the EA (Algol) type have been selected for analysis. From the Kepler light curves, we can estimate their mass ratios and size ratios of the two components by comparing the respective primary and secondary eclipsing depths and effective temperature ratios. The LAMOST spectra, if available, will be used to fine tune our classifications and estimates. We will also compare the corresponding level of flare activity with the Hα emission EW (equivalent width) to examine whether binary interaction might be conductive to explosive energy release mechanism. Such approach will be applied to the PTF data analysis allowing a much larger number of EBs to be investigated.

Keywords: Algol type Eclipsing Binary, Kepler, LAMOST, mass ratio