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| Stéphane Udry | |
|---|---|
| Name | Stéphane Udry |
| Birth date | 1966 |
| Birth place | Geneva, Switzerland |
| Fields | Astronomy, Astrophysics, Exoplanetology |
| Institutions | Observatory of Geneva, University of Geneva, European Southern Observatory |
| Alma mater | University of Geneva |
| Known for | Radial velocity surveys, HARPS instrument, exoplanet discoveries |
Stéphane Udry is a Swiss astronomer and astrophysicist notable for his leadership in radial velocity surveys and instrumental development that advanced exoplanet detection. He has held senior positions at the Observatory of Geneva and the University of Geneva and collaborated extensively with European research institutions and observatories. His work intersects observational programs, instrument teams, and multinational projects that reshaped knowledge about planetary systems.
Udry was born in Geneva and pursued undergraduate and graduate studies at the University of Geneva, where he completed doctoral research connected to the Observatory of Geneva. During his formative years he engaged with research groups affiliated with the European Southern Observatory, the Cerro Tololo Inter-American Observatory, and the La Silla Observatory. His education brought him into contact with researchers from the Max Planck Institute for Astronomy, the Harvard–Smithsonian Center for Astrophysics, the California Institute of Technology, and the Massachusetts Institute of Technology, building networks that included collaborators at the Space Telescope Science Institute and the European Space Agency. He developed expertise influenced by methodologies from the Geneva Observatory, the Institut d'Astrophysique de Paris, and the École Polytechnique Fédérale de Lausanne.
Udry has been a long-term staff scientist at the Observatory of Geneva and a professor at the University of Geneva, participating in consortia involving the European Southern Observatory, the Swiss National Science Foundation, and the European Research Council. He served on committees and advisory boards associated with the European Southern Observatory instrumentation group, the Max Planck Society, and the Royal Astronomical Society. His collaborations extended to teams at the National Aeronautics and Space Administration, the National Science Foundation, the CNRS, and the Institut d'Astrophysique de Paris, and he partnered with scientists from the University of California, Berkeley, the University of Cambridge, the University of Oxford, and the University of Zurich. Udry contributed to projects coordinated with the European Southern Observatory's La Silla operations, the Very Large Telescope programs, and survey initiatives linked to the Kepler Mission and later the CHEOPS and PLATO missions.
Udry played a central role in radial velocity surveys that produced detections of planets around stars monitored at the La Silla Observatory with the HARPS spectrograph and influenced follow-up programs at the Very Large Telescope. He led and contributed to teams that included members from the Geneva Observatory, the Observatoire de Haute-Provence, the Instituto de Astrofísica de Canarias, and the University of Liege, coordinating observing campaigns with instruments such as CORALIE, ELODIE, and HARPS-N. His instrumental work interfaced with engineering groups at the European Southern Observatory and manufacturers contracted through Thales Alenia Space and industrial partners associated with the Swiss State Secretariat for Education, Research and Innovation.
Udry's observational discoveries were confirmed and expanded through collaborations with investigators from the Harvard–Smithsonian Center for Astrophysics, the Max Planck Institute for Astronomy, the Jet Propulsion Laboratory, and the Space Telescope Science Institute, often involving data synergy with the Spitzer Space Telescope, the Hubble Space Telescope, and the Transiting Exoplanet Survey Satellite. He contributed to characterization efforts that connected radial velocity mass determinations with transit photometry from the Kepler Mission and follow-up by the CHaracterising ExOPlanets Satellite (CHEOPS). His work on low-mass planets informed theoretical interpretations promoted by groups at the Institute of Astronomy, Cambridge, the Princeton University Observatory, and the University of California, Santa Cruz.
Udry has received recognition from national and international scientific bodies including honors linked to the Swiss Academy of Sciences, awards from the European Southern Observatory community, and distinctions associated with the University of Geneva. He has been invited to speak at conferences organized by the International Astronomical Union, the American Astronomical Society, and the European Astronomical Society, and his leadership roles have been acknowledged by committees at institutions such as the Royal Astronomical Society and the Max Planck Society.
- Udry, S.; et al., radial-velocity survey papers and discovery announcements published in journals associated with the European Southern Observatory and collaborations with the Geneva Observatory teams, often cited alongside work from Michel Mayor, Didier Queloz, Frédéric Pepe, and Xavier Bonfils. - Instrumentation and survey methodology contributions coauthored with members from Observatoire de Genève, Institut d'Astrophysique de Paris, Max Planck Institute for Astronomy, and Harvard–Smithsonian Center for Astrophysics teams. - Collaborative exoplanet characterization studies integrating data from the Kepler Mission, the Hubble Space Telescope, the Spitzer Space Telescope, and follow-up networks including the European Southern Observatory and space agencies such as NASA and ESA.
Category:Swiss astronomers Category:Exoplanet researchers