A. Santerne 1 G. Hébrard 2 J. Lillo-Box D. J. Armstrong S. C. C. Barros 3 O. Demangeon 4, 5 D. Barrado 6, 7 A. Debackere M. Deleuil 8 E. Delgado Mena M. Montalto D. Pollacco H. P. Osborn S. G. Sousa L. Abe 9 V. Adibekyan 1 J. -M. Almenara 10 P. André 11 G. Arlic G. Barthe P. Bendjoya 12 R. Behrend 13, 14 I. Boisse 8 F. Bouchy 15, 2 H. Boussier M. Bretton D. J. A. Brown B. Carry 16 A. Cailleau E. Conseil G. Coulon B. Courcol B. Dauchet J. -C. Dalouzy M. Deldem O. Desormieres P. Dubreuil J. -M. Fehrenbach S. Ferratfiat R. Girelli J. Gregorio S. Jaecques F. Kugel 17 J. Kirk 18 O. Labrevoir J. -C. Lachurie K. W. F. Lam P. Le Guen 19 P. Martinez 20 L. P. A. Maurin J. Mccormac J-B. Pioppa U. Quadri A. Rajpurohit J. Rey 21 J. -P. Rivet R. Roy 22 N. C. Santos 1, 23 F. Signoret L. Strabla O. Suarez D. Toublanc 24 M. Tsantaki J. -M. Vienney P. A. Wilson M. Bachschmidt Florent Colas 16 O. Gerteis P. Louis J. -C. Mario C. Marlot 25 J. Montier V. Perroud V. Pic D. Romeuf 26 S. Ubaud D. Verilhac
Abstract : In the present paper we report the discovery of a new hot Jupiter, K2-29 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 3.25 days, a mass of 0.73 +/- 0.04M(sic), and a radius of 1.19 +/- 0.02 R(sic). 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 similar to 450 Myr. The observation of the Rossiter-McLaughlin effect shows that the planet is aligned with respect to the stellar spin. Given the deep transit (20 mmag), 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 both stars are relatively bright.
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A. Santerne, G. Hébrard, J. Lillo-Box, D. J. Armstrong, S. C. C. Barros, et al.. K2-29 b/WASP-152 b: AN ALIGNED AND INFLATED HOT JUPITER IN A YOUNG VISUAL BINARY. The Astrophysical Journal, American Astronomical Society, 2016, 824 (1), ⟨10.3847/0004-637X/824/1/55⟩. ⟨hal-01440104⟩



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