- Stéphane Udry
Stéphane Udry (born
1961in Sion, Switzerland) is an astronomer at the University of Genevain Switzerland, whose current work is primarily the search for extra-solar planets. He and his team have recently discovered a possibly terrestrial planetin the habitable zoneof the red dwarfstar Gliese 581, approximately 20 light yearsaway in the constellation Libra.
Udry earned a doctorate at the
University of Genevain 1992,and spent two years at Rutgers Universityin New Jersey.Later, Udry returned to Geneva, andworked with Michel Mayor, the discoverer of 51 Pegasi b,the first extrasolar planet found revolving around a normal star.In 2007, Udry was appointed full professor in the faculty of natural sciencesat the University of Geneva.
Udry's initial research concerned the dynamics of galaxies. His current work chiefly concerns the search for extra-solar planets by analyzing variations in the radial velocities of stars. So far, Udry has participated in the discovery of 84 extra-solar planets. Among them is
Gliese 581 c(announced April 25, 2007) perhaps the most likely candidate for habitability of any extrasolar planet discovered so far. The planet was discovered by analyzing data obtained by the High Accuracy Radial Velocity Planet Searcher(HARPS) on the European Southern Observatory's 3.6 meter telescope at La Silla Observatoryin Chile. He was interviewed by Mat Kaplanon " Planetary Radio" sometime at the end of April 2007.
SHORT DESCRIPTION=Swish astronomer
DATE OF BIRTH=1961
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