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Astrometric planet search around the faintest and the brightest stars
If you have a question about this talk, please contact Dr B.-O. Demory.
Measuring the positions of nearby stars can inform us on the presence and properties of extrasolar planets around them, because planets induce an orbital reflex motion of the host star. I will first show results from an ongoing astrometric planet search around very low-mass stars using an 8-metre optical telescope. For these faint targets, we achieve 0.1 milli-arcsecond precision, which allows us to measure accurate distances, to characterise elusive binaries, and to identify promising planet candidates. Second, I will discuss the potential for astrometric planet detection with ESA ’s Gaia mission and I will present a project that aims at exploiting this potential for the brightest stars in the sky.
This talk is part of the Exoplanet Meetings series.
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