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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).
EditorSaul Eadweard Helias
École Normale Supérieure
Saul Eadweard Helias
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