High precision ground-based (spectro-)photometry of transiting exoplanets

Dr. Ernst de Mooij, DAA

Characterizing exoplanet atmospheres requires very high-precision measurements. The decrease in flux during transit of a Jupiter-like planet around a Sun-like star is approximately 1%. The variations in transit-depth as a function of wavelengths due to the planet’s atmosphere are only a few percent of the transit-depth.

In this discussion, de Mooij will describe how astronomers can use ground-based telescopes to reach these high-precisions, as well as some of the problems encountered and their solutions.