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dc.contributor.authorS. Awiphanen_US
dc.contributor.authorE. Kerinsen_US
dc.contributor.authorS. Pichadeeen_US
dc.contributor.authorS. Komonjindaen_US
dc.contributor.authorV. S. Dhillonen_US
dc.contributor.authorW. Rujopakarnen_US
dc.contributor.authorS. Poshyachindaen_US
dc.contributor.authorT. R. Marshen_US
dc.contributor.authorD. E. Reicharten_US
dc.contributor.authorK. M. Ivarsenen_US
dc.contributor.authorJ. B. Haislipen_US
dc.description.abstract© 2016, Published by Oxford University Press on behalf of the Royal Astronomical Society. GJ3470b is a hot Neptune exoplanet orbiting an M dwarf and the first sub-Jovian planet to exhibit Rayleigh scattering. We present transit timing variation (TTV) and transmission spectroscopy analyses of multiwavelength optical photometry from 2.4-m and 0.5-m telescopes at the Thai National Observatory, and the 0.6-m PROMPT-8 telescope in Chile. Our TTV analysis allows us to place an upper mass limit for a second planet in the system. The presence of a hot Jupiter with a period of less than 10 d or a planet with an orbital period between 2.5 and 4.0 d are excluded. Combined optical and near-infrared transmission spectroscopy favour an H/He-dominated haze (mean molecular weight 1.08 ± 0.20) with high particle abundance at high altitude. We also argue that previous near-infrared data favour the presence of methane in the atmosphere of GJ3470b.en_US
dc.subjectEarth and Planetary Sciencesen_US
dc.subjectPhysics and Astronomyen_US
dc.titleTransit timing variation and transmission spectroscopy analyses of the hot Neptune GJ3470ben_US
article.title.sourcetitleMonthly Notices of the Royal Astronomical Societyen_US
article.volume463en_US of Manchesteren_US Mai Universityen_US of Sheffielden_US Astrofisico de Canariasen_US Universityen_US of Tokyoen_US Astronomical Research Institute of Thailanden_US University of Warwicken_US University of North Carolina at Chapel Hillen_US
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