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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731937.0, MPI für Astronomie / Publikationen_mpia
An optical transmission spectrum of the giant planet WASP-36 b
Authors:Mancini, L.; Kemmer, J.; Southworth, J.; Bott, K.; Mollière, P.; Ciceri, S.; Chen, G.; Henning, T.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:Monthly Notices of the Royal Astronomical Society
Volume:459
Issue / Number:2
Start Page:1393
End Page:1402
Audience:Not Specified
Abstract / Description:We present broad-band photometry of five transits in the planetary system WASP-36, totalling 17 high-precision light curves. Four of the transits were simultaneously observed in four passbands (g', r', i', z'), using the telescope-defocusing technique, and achieving scatters of less than 1 mmag per observation. We used these data to improve the measured orbital and physical properties of the system, and obtain an optical transmission spectrum of the planet. We measured a decreasing radius from bluer to redder passbands with a confidence level of more than 5σ. The radius variation is roughly 11 pressure scale heights between the g' and the z' bands. This is too strong to be Rayleigh scattering in the planetary atmosphere, and implies the presence of a species which absorbs strongly at bluer wavelengths.
Free Keywords:techniques: photometric; stars: fundamental parameters; stars: individual: WASP-36; planetary systems
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0035-8711 %R 10.1093/mnras/stw659
URL:http://adsabs.harvard.edu/abs/2016MNRAS.459.1393M
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