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WASP-104b is darker than charcoal

Močnik, T.; Hellier, C.; Southworth, J.

WASP-104b is darker than charcoal Thumbnail


Authors

T. Močnik



Abstract

By analyzing the K2 short-cadence data from Campaign 14, we detect phase-curve modulation in the light curve of the hot-Jupiter host star WASP-104. The ellipsoidal modulation is detected with high significance and in agreement with theoretical expectations, while Doppler beaming and reflection modulations are detected tentatively. We show that the visual geometric albedo is lower than 0.03 at 95% confidence, making it one of the least-reflective planets found to date. The light curve also exhibits a rotational modulation, implying a stellar rotational period likely to be near 23 or 46 days. In addition, we refine the system parameters and place tight upper limits for transit timing and duration variations, starspot occultation events, and additional transiting planets.

Journal Article Type Article
Acceptance Date Jun 5, 2018
Publication Date Jul 6, 2018
Publicly Available Date Mar 28, 2024
Journal Astronomical Journal
Print ISSN 0004-6256
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 156
Issue 2
Article Number 44
DOI https://doi.org/10.3847/1538-3881/aacb26
Keywords planets and satellites, fundamental parameters, individual (WASP-104b)
Publisher URL http://doi.org/10.3847/1538-3881/aacb26

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