description Stephane Udry Overview
Stéphane Udry is a Swiss astronomer working at the Geneva Observatory in Switzerland. He is noted for his observational research on exoplanets, utilizing radial velocity measurements to detect distant worlds. As a leader within the High Accuracy Radial Velocity Planet Searcher (HARPS) team, he announced the discovery of the super-Earth exoplanet Gliese 581c in 2007. His work is aimed at advancing the astronomical understanding of planetary systems around red dwarf stars.
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What does Stéphane Udry research?
Stéphane Udry studies exoplanets using observational astronomy. His work relies heavily on radial velocity measurements to detect the gravitational effect of planets on their stars.
Where does Stéphane Udry work?
He works at the Geneva Observatory in Switzerland. He is also associated with leadership in the High Accuracy Radial velocity Planet Searcher, known as HARPS.
How does radial velocity detect exoplanets?
The method measures small shifts in a star’s motion caused by the gravitational pull of an orbiting planet. Repeated shifts can reveal a planet that cannot be seen directly.
What is HARPS in relation to Stéphane Udry?
HARPS stands for the High Accuracy Radial velocity Planet Searcher. Udry has been a leader associated with this instrument and its exoplanet research program.
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