1. EPIC211089792 b: an aligned and inflated hot jupiter in a young visual binary
- Author
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Santerne, A., Hébrard, G., Lillo-Box, J., Armstrong, D. J., Barros, S. C. C., Demangeon, O., Barrado, D., Debackere, A., Deleuil, M., Mena, E. Delgado, Montalto, M., Pollacco, D., Osborn, H. P., Sousa, S. G., Abe, L., Adibekyan, V., Almenara, J. -M., André, P., Arlic, G., Barthe, G., Bendjoya, P., Behrend, R., Boisse, I., Bouchy, F., Boussier, H., Bretton, M., Brown, D. J. A., Carry, B., Cailleau, A., Conseil, E., Courcol, B., Dauchet, B., Dalouzy, J. -C., Deldem, M., Dubreuil, P., Fehrenbach, J. -M., Ferratfiat, S., Girelli, R., Gregorio, J., Jaecques, S., Kugel, F., Kirk, J., Labrevoir, O., Lachurié, J. -C., Lam, K. W. F., Guen, P. Le, Martinez, P., Maurin, L., McCormac, J., Pioppa, J-B., Quadri, U., Rajpurohit, A., Rey, J., Rivet, J. -P., Roy, R., Santos, N. C., Signoret, F., Strabla, L., Suarez, O., Toublanc, D., Tsantaki, M., Wilson, P. A., Bachschmidt, M., Colas, F., Gerteis, O., Louis, P., Mario, J. -C., Marlot, C., Montier, J., Perroud, V., Pic, V., Romeuf, D., Ubaud, S., and Verilhac, D.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - 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., Comment: Submitted to ApJ
- Published
- 2016
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