Abstract

We present the observation of a transit of the exoplanet TrES-3b by the newly commissioned robotic telescope TRAPPIST-North located at Oukaimeden Observatory (Morocco). The obtained light curve reaches a photometric precison 600 ppm. Its Bayesian analysis with a Markov Chain Monte Carlo code enables us to refine the radius of the planet to . These results demonstrate the high potential of TRAPPIST-North for high-photometry of exoplanet transits.

Highlights

  • When a planet crosses in front of its parent star’s disk, the observed brightness of the star drops by a small amount whose amplitude depend on the relative sizes of the star and the planet

  • TRAPPIST project TRAPPIST-North (TRansiting Planets and PlanetesImals Small Telescope [2] and [3]) is a 0.6 m robotic telescope that has started its operation at the Oukaimeden Observatory (Morocco) and done in collaboration with Cadi Ayyad University in June 2016

  • The stellar fluxes are extracted for eight different fixed apertures centered on these refined coordinates, we used an estimate of the sky background near the star

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Summary

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- Monitoring of comets activity and composition with the TRAPPIST-North telescope Y Moulane, Z Benkhaldoun, E Jehin et al. - Scintillation Noise in Exoplanet Transit Photometry Dóra Föhring, Richard Wilson, James Osborn et al. - Precision Near-Infrared Photometry for Exoplanet Transit Observations. I. Ensemble Spot Photometry for an All-Sky Survey C. This content was downloaded from IP address 161.72.168.208 on 27/08/2019 at 16:40

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