We present the discovery of four new transiting hot jupiters, detected mainly from SuperWASP-North and SOPHIE observations. These new planets, WASP-52b, WASP-58b, WASP-59b, and WASP-60b, have orbital periods ranging from 1.7 to 7.9 days, masses between 0.46 and 0.94 M_Jup, and radii between 0.73 and 1.49 R_Jup. Their G1 to K5 dwarf host stars have V magnitudes in the range 11.7-13.0. The depths of the transits are between 0.6 and 2.7%, depending on the target. With their large radii, WASP-52b and 58b are new cases of low-density, inflated planets, whereas WASP-59b is likely to have a large, dense core. WASP-60 shows shallow transits. In the case of WASP-52 we also detected the Rossiter-McLaughlin anomaly via time-resolved spectroscopy of a transit. We measured the sky-projected obliquity lambda = 24 (+17/-9) degrees, indicating that WASP-52b orbits in the same direction as its host star is rotating and that this prograde orbit is slightly misaligned with the stellar equator. These four new planetary systems increase our statistics on hot jupiters, and provide new targets for follow-up studies.
@article{arxiv.1211.0810,
title = {WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets},
author = {G. Hebrard and A. Collier Cameron and D. J. A. Brown and R. F. Diaz and F. Faedi and B. Smalley and D. R. Anderson and D. Armstrong and S. C. C. Barros and J. Bento and F. Bouchy and A. P. Doyle and B. Enoch and Y. Gomez Maqueo Chew and E. M. Hebrard and C. Hellier and M. Lendl and T. A. Lister and P. F. L. Maxted and J. McCormac and C. Moutou and D. Pollacco and D. Queloz and A. Santerne and I. Skillen and J. Southworth and J. Tregloan-Reed and A. H. M. J. Triaud and S. Udry and M. Vanhuysse and C. A. Watson and R. G. West and P. J. Wheatley},
journal= {arXiv preprint arXiv:1211.0810},
year = {2015}
}
Comments
13 pages, 8 figures, 4 tables, accepted for publication in A&A