The EBLM project III. A Saturn-size low-mass star at the hydrogen-burning limit

  title={The EBLM project III. A Saturn-size low-mass star at the hydrogen-burning limit},
  author={Alexander von Boetticher and Amaury H. M. J. Triaud and Didier Queloz and Samuel Gill and Monika Lendl and Laetitia Delrez and David R. Anderson and Andrew Collier Cameron and Francesca Faedi and Micha{\"e}l Gillon and Yilen G'omez Maqueo Chew and Leslie Hebb and Coel Hellier and Emmanuel Jehin and Pierre F. L. Maxted and David V. Martin and Francesco A. Pepe and Don Pollacco and Damien S'egransan and Barry Smalley and St{\'e}phane Udry and Richard G. West},
  journal={arXiv: Solar and Stellar Astrophysics},
We report the discovery of an eclipsing binary system with mass-ratio q $\sim$ 0.07. After identifying a periodic photometric signal received by WASP, we obtained CORALIE spectroscopic radial velocities and follow-up light curves with the Euler and TRAPPIST telescopes. From a joint fit of these data we determine that EBLM J0555-57 consists of a sun-like primary star that is eclipsed by a low-mass companion, on a weakly eccentric 7.8-day orbit. Using a mass estimate for the primary star derived… 

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