- Stéphane Udry
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Stéphane Udry (né en 1961 à Sion) est un astronome à l'université de Genève en Suisse dont le travail porte en particulier sur la recherche d'exoplanètes. Lui et son équipe ont découvert une planète tellurique dans la zone habitable de la naine rouge Gliese 581, laquelle se trouve à environ 20 années-lumière dans la constellation de la Balance[1],[2],[3].
Références
- Dennis Overbye : 20 light years away, the most Earthlike planet yet, The New York Times (April 25, 2007). Consulté le 2010-12-22. « The most enticing property yet found outside our solar system is about 20 light years away in the constellation Libra, according to a team of European astronomers. The astronomers said Tuesday that they had discovered a planet five times as massive as the Earth orbiting a dim red star known as Gliese 581. It is the smallest of the 200 or so planets that are known to exist outside of our solar system, the extrasolar, or exo-, planets. It orbits its home star within the so-called habitable zone where surface water, the staff of life, could exist if other conditions are right, said Stéphane Udry of the Geneva Observatory. »
- JOHN NOBLE WILFORD : Another Cousin to Jupiter Is Found, The New York Times (June 19, 2002). Consulté le 2010-12-22. « Dr. Stéphane Udry, a member of the team from the Geneva Observatory in Switzerland, said in an interview that what was missing in this planetary system — mammoth planets extremely close to the host stars — made it a more promising solar system analog than the one announced last week by the leading team of American planet hunters. The star the Americans found is accompanied by one and probably two Jupiter-size planets at closer distances than Mercury is from the Sun. »
- Jeremy Manier : Just like home, yet light years from Earth, Chicago Tribune (April 25, 2007). Consulté le 2010-12-22. « As with nearly all such planetary discoveries, astronomers could not observe Gliese 581 directly because it is invisible in the glare of its sun. Instead, the European group led by Stephane Udry and Michael Mayor calculated the planet's presence from its tiny gravitational tug on the star. »
- (en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « Stéphane Udry » (voir la liste des auteurs)
Liens externes
- (en) Vidéo de l'intervention de Stéphane Udry lors du colloque « Origins 2011 » sur le site d'Innovaxiom
Catégories :- Naissance en 1961
- Astronome du XXIe siècle
- Astronome suisse
- Naissance à Sion
- Découvreur d'exoplanètes
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