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- Roger_Cayrel abstract "Roger Victor Emile Cayrel (born 4 December 1925, Bordeaux, France) is a French astronomer. His main interests are stellar atmospheres, galactic chemical evolution and metal-poor stars.He attended the Lycée Michel-Montaigne in Bordeaux and studied physics at the École normale supérieure and the Faculté des sciences de Paris.Beside his scientific work, he had a number of high-ranking posts in the management of science: director of the Canada-France-Hawaii Telescope (CFHT, 1974–1980), president of the IAU commission on stellar atmospheres (1973–1976) and head of the Bureau des Longitudes (1995–1996).Cayrel has been a corresponding member of the Académie des Sciences since 1988. He was awarded the Prix Jules Janssen of the French Astronomical Society in 2001.Cayrel and his colleagues discovered thorium and uranium in the ultra-metal-poor halo star BPS CS31082-0001, which was named Cayrel's Star to honour him. From the thorium and uranium content, an age of 12.5 Billion years could be calculated.Since 1954, he has been married to the Italian astronomer Giusa de Strobel.".
- Roger_Cayrel birthDate "1925-12-04".
- Roger_Cayrel birthYear "1925".
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- Roger_Cayrel dateOfBirth "1925-12-04".
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- Roger_Cayrel name "Cayrel, Roger Victor Emile".
- Roger_Cayrel shortDescription "French astronomer".
- Roger_Cayrel description "French astronomer".
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- Roger_Cayrel comment "Roger Victor Emile Cayrel (born 4 December 1925, Bordeaux, France) is a French astronomer.".
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- Roger_Cayrel givenName "Roger Victor Emile".
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- Roger_Cayrel name "Cayrel, Roger Victor Emile".
- Roger_Cayrel name "Roger Victor Emile Cayrel".
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