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arXiv · 1802.02132

An Analysis of Transiting Hot Jupiters Observed with K2: WASP-55b and WASP-75b

B. J. M. Clark·D. R. Anderson·C. Hellier·O. D. Turner·T. Močnik
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Abstract

We present our analysis of the K2 short-cadence data of two previously known hot Jupiter exoplanets: WASP-55b and WASP-75b. The high precision of the K2 lightcurves enabled us to search for transit timing and duration variations, rotational modulation, starspots, phase-curve variations and additional transiting planets. We identified stellar variability in the WASP-75 lightcurve which may be an indication of rotational modulation, with an estimated period of $11.2\pm1.5$ days. We combined this with the spectroscopically measured $v\sin(i_*)$ to calculate a possible line of sight projected inclination angle of $i_*=41\pm16^{\circ}$. We also perform a global analysis of K2 and previously published data to refine the system parameters.

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B. J. M. Clark, D. R. Anderson, C. Hellier, O. D. Turner, T. Močnik. 2018-02-06. An Analysis of Transiting Hot Jupiters Observed with K2: WASP-55b and WASP-75b. https://doi.org/10.1088/1538-3873%2Faaa33e

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