WASP-157b, a Transiting Hot Jupiter Observed with K2

T. Mo\v{c}nik , D. R. Anderson , D. J. A. Brown , A. Collier Cameron , L. Delrez , M. Gillon , C. Hellier , E. Jehin

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M. Lendl P. F. L. Maxted M. Neveu-VanMalle F. Pepe D. Pollacco D. Queloz D. S\'egransan B. Smalley J. Southworth A. H. M. J. Triaud S. Udry R. G. West

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classification 🌌 astro-ph.EP

keywords jupitertransitingwasp-157bannouncearoundconservativedensitydetect

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We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density with a mass of $0.57 \pm 0.10$ M$_{\rm Jup}$ and a radius of $1.06 \pm 0.05$ R$_{\rm Jup}$. We do not detect any rotational or phase-curve modulations, nor the secondary eclipse, with conservative semi-amplitude upper limits of 250 and 20 ppm, respectively.

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WASP-157b, a Transiting Hot Jupiter Observed with K2

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