Qatar Exoplanet Survey: Qatar-6b -- a grazing transiting hot Jupiter

We report the discovery of Qatar-6b, a new transiting planet identified by the Qatar Exoplanet Survey (QES). The planet orbits a relatively bright (V=11.44), early-K main-sequence star at an orbital period of P~3.506 days. An SED fit to available multi-band photometry, ranging from the near-UV to th...

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Bibliographic Details
Published in:arXiv.org 2017-12
Main Authors: Alsubai, Khalid, Tsvetanov, Zlatan I, Latham, David W, Bieryla, Allyson, Esquerdo, Gilbert A, Mislis, Dimitris, Pyrzas, Stylianos, Foxell, Emma, McCormac, James, Baranec, Christoph, Vilchez, Nicolas P E, West, Richard, Esamdin, Ali, Dang, Zhenwei, Dalee, Hani M, Al-Rajihi, Amani A, Abeer Kh Al-Harbi
Format: Article
Language:English
Subjects:
Extrasolar planets
Gas giant planets
Grazing
Light curve
Main sequence stars
Photometry
Planetary orbits
Planetary systems
Transit
Online Access:Get full text
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Summary:We report the discovery of Qatar-6b, a new transiting planet identified by the Qatar Exoplanet Survey (QES). The planet orbits a relatively bright (V=11.44), early-K main-sequence star at an orbital period of P~3.506 days. An SED fit to available multi-band photometry, ranging from the near-UV to the mid-IR, yields a distance of d = 101 +/- 6 pc to the system. From a global fit to follow-up photometric and spectroscopic observations, we calculate the mass and radius of the planet to be Mp = 0.67 +/- 0.07 Mjup and Rp = 1.06 +/- 0.07 Rjup, respectively. We use multi-color photometric light curves to show that the transit is grazing, making Qatar-6b one of the few exoplanets known in a grazing transit configuration. It adds to the short list of targets that offer the best opportunity to look for additional bodies in the host planetary system through variations in the transit impact factor and duration.
ISSN:2331-8422
DOI:10.48550/arxiv.1712.03216