Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 2G013

Transmission spectrum of HAT-P-1b as observed with the Hale telescope

Chen, Guo (Purple Mountain Observatory, China)
van Boekel, Roy (Max Planck Institute for Astronomy, Germany)
Madhusudhan, Nikku (Yale University, USA)
Wang, Hongchi (Purple Mountain Observatory, China)
Henning, Thomas (Max Planck Institute for Astronomy, Germany)

We observed two primary transits of the hot Jupiter HAT-P-1b using the DBSP and TSpec mounted on the Hale 200-inch telescope in September 2012. This work aims at constructing the first optical-to-NIR transmission spectrum for HAT-P-1b from the ground, and thereby revealing its atmospheric properties. We have potentially detected the potassium absorption in HAT-P-1b\'s atmosphere, and greatly improved the precision of transit ephemeris and system parameters. Detail atmospheric spectral retrieval modelling is still in progress.

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