Eclipsing Binary Science Via the Merging of Transit and Doppler Exoplanet Survey Data - A Case Study With the MARVELS Pilot Project and SuperWASP
Abstract
Exoplanet transit and Doppler surveys discover many binary stars during their operation that can be used to conduct a variety of ancillary science. Specifically, eclipsing binary stars can be used to study the stellar mass-radius relationship and to test predictions of theoretical stellar evolution models. By cross-referencing 24 binary stars found in the MARVELS Pilot Project with SuperWASP photometry, we find two new eclipsing binaries, TYC 0272-00458-1 and TYC 1422-01328-1, which we use as case studies to develop a general approach to eclipsing binaries in survey data. TYC 0272-00458-1 is a single-lined spectroscopic binary for which we calculate a mass of the secondary and radii for both components using reasonable constraints on the primary mass through several different techniques. For a primary mass of M_1 = 0.92 +/- 0.1 M_solar, we find M_2 = 0.610 +/- 0.036 M_solar, R_1 = 0.932 +/- 0.076 R_solar and R_2 = 0.559 +/- 0.102 R_solar, and find that both stars have masses and radii consistent with model predictions. TYC 1422-01328-1 is a triple-component system for which we can directly measure the masses and radii of the eclipsing pair. We find that the eclipsing pair consists of an evolved primary star (M_1 = 1.163 +/- 0.034 M_solar, R_1 = 2.063 +/- 0.058 R_solar) and a G-type dwarf secondary (M_2 = 0.905 +/- 0.067 M_solar, R_2 = 0.887 +/- 0.037 R_solar). We provide the framework necessary to apply this analysis to much larger datasets.
Keywords
Cite
@article{arxiv.1105.2027,
title = {Eclipsing Binary Science Via the Merging of Transit and Doppler Exoplanet Survey Data - A Case Study With the MARVELS Pilot Project and SuperWASP},
author = {Scott W. Fleming and Pierre F. L. Maxted and Leslie Hebb and Keivan G. Stassun and Jian Ge and Phillip A. Cargile and Luan Ghezzi and Nathan M. De Lee and John Wisniewski and Bruce Gary and Gustavo F. Porto de Mello and Leticia Ferreira and Bo Zhao and David R. Anderson and Xiaoke Wan and Coel Hellier and Pengcheng Guo and Richard G. West and Suvrath Mahadevan and Don Pollacco and Brian Lee and Andrew Collier Cameron and Julian C. van Eyken and Ian Skillen and Justin R. Crepp and Duy Cuong Nguyen and Stephen R. Kane and Martin Paegert and Luiz Nicolaci da Costa and Marcio A. G. Maia and Basilio X. Santiago},
journal= {arXiv preprint arXiv:1105.2027},
year = {2015}
}
Comments
Accepted for publication in AJ