EPIC211089792 b: an aligned and inflated hot jupiter in a young visual binary
Abstract
In the present paper we report the discovery of a new hot Jupiter, EPIC211089792 b, first detected by the Super-WASP observatory and then by the K2 space mission during its campaign 4. The planet has a period of 3.25d, a mass of 0.73 +/- 0.04 Mjup, and a radius of 1.19 +/- 0.02 Rjup. The host star is a relatively bright (V=12.5) G7 dwarf with a nearby K5V companion. Based on stellar rotation and the abundance of Lithium, we find that the system might be as young as about 450 Myr. The observation of the Rossiter-McLaughlin effect shows the planet is aligned with respect to the stellar spin. Given the deep transit (20mmag), the magnitude of the star and the presence of a nearby stellar companion, the planet is a good target for both space- and ground-based transmission spectroscopy, in particular in the near-infrared where the both stars are relatively bright.
Keywords
Cite
@article{arxiv.1601.07680,
title = {EPIC211089792 b: an aligned and inflated hot jupiter in a young visual binary},
author = {A. Santerne and G. Hébrard and J. Lillo-Box and D. J. Armstrong and S. C. C. Barros and O. Demangeon and D. Barrado and A. Debackere and M. Deleuil and E. Delgado Mena and M. Montalto and D. Pollacco and H. P. Osborn and S. G. Sousa and L. Abe and V. Adibekyan and J. -M. Almenara and P. André and G. Arlic and G. Barthe and P. Bendjoya and R. Behrend and I. Boisse and F. Bouchy and H. Boussier and M. Bretton and D. J. A. Brown and B. Carry and A. Cailleau and E. Conseil and B. Courcol and B. Dauchet and J. -C. Dalouzy and M. Deldem and P. Dubreuil and J. -M. Fehrenbach and S. Ferratfiat and R. Girelli and J. Gregorio and S. Jaecques and F. Kugel and J. Kirk and O. Labrevoir and J. -C. Lachurié and K. W. F. Lam and P. Le Guen and P. Martinez and L. Maurin and J. McCormac and J-B. Pioppa and U. Quadri and A. Rajpurohit and J. Rey and J. -P. Rivet and R. Roy and N. C. Santos and F. Signoret and L. Strabla and O. Suarez and D. Toublanc and M. Tsantaki and P. A. Wilson and M. Bachschmidt and F. Colas and O. Gerteis and P. Louis and J. -C. Mario and C. Marlot and J. Montier and V. Perroud and V. Pic and D. Romeuf and S. Ubaud and D. Verilhac},
journal= {arXiv preprint arXiv:1601.07680},
year = {2016}
}
Comments
Submitted to ApJ