1. WASP-167b/KELT-13b: Joint discovery of a hot Jupiter transiting a rapidly-rotating F1V star
- Author
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Temple, L. Y., Hellier, C., Albrow, M. D., Anderson, D. R., Bayliss, D., Beatty, T. G., Bieryla, A., Brown, D. J. A., Cargile, P. A., Cameron, A. Collier, Collins, K. A., Colón, K. D., Curtis, I. A., D'Ago, G., Delrez, L., Eastman, J., Gaudi, B. S., Gillon, M., Gregorio, J., James, D., Jehin, E., Joner, M. D., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lendl, M., Lund, M. B., Malpas, A. L., Maxted, P. F. L., Myers, G., Oberst, T. E., Pepe, F., Pepper, J., Pollacco, D., Queloz, D., Rodriguez, J. E., Ségransan, D., Siverd, R. J., Smalley, B., Stassun, K. G., Stevens, D. J., Stockdale, C., Tan, T. G., Triaud, A. H. M. J., Udry, S., Villanueva Jr, S., West, R. G., and Zhou, G.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a $V$ = 10.5, F1V star with [Fe/H] = 0.1 $\pm$ 0.1. The 1.5 R$_{\rm Jup}$ planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of $<$ 8 M$_{\rm Jup}$ on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of $\lambda = -165^{\circ} \pm 5^{\circ}$. This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned. WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period. We find evidence of non-radial stellar pulsations in the host star, making it a $\delta$-Scuti or $\gamma$-Dor variable. The similarity to WASP-33, a previously known hot-Jupiter host with pulsations, adds to the suggestion that close-in planets might be able to excite stellar pulsations., Comment: 11 pages, 8 figures, accepted by MNRAS
- Published
- 2017
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