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SÉMINAIRE DU LERMA
OBSERVATOIRE DE PARIS
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Jeudi 13 fevrier 2003 à 14 heure


77 avenue Denfert Rochereau, Paris 14



Salle de l'Atelier, Observatoire de Paris





DUST AND GAS IN GALAXIES AT z > 2.5



Andrew Baker

MPE Garching, Germany



Résumé : Star-forming galaxies at high redshift can be identified in the rest-UV by broad-band imaging in filters which straddle the Lyman break, or in the rest-FIR by sensitive submillimeter bolometry. The orthogonality of these selection techniques means that key physical parameters of the two populations remain poorly understood. Using the IRAM 30m telescope and Plateau de Bure interferometer, we have obtained sensitive observations of continuum and molecular line emission from both Lyman break and submillimeter galaxies, allowing us to place new constraints on the systems' total masses and rates of star formation. I will discuss the implications of these results for models of structure formation and the production of the submillimeter background.