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SÉMINAIRE DU LERMA
OBSERVATOIRE DE PARIS
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Vendredi 3 décembre 2010 à 14H


77 avenue Denfert Rochereau, Paris 14



Salle de l'Atelier, Observatoire de Paris





Observing in the infrared the obscure growth of black holes and their host gal



Kalliopi DASYRA

CEA/observatoire de Paris



Résumé : Rapid growth of black holes (BHs) and intense star formation are often believed to simultaneously take place in the galaxies that are largely responsible for the cosmic infrared background. However, the standard techniques of obtaining host galaxy and BH mass estimates often fail in IR-bright galaxies because of the high amount/compactness of obscuring medium in them. I will present galaxy mass estimates from VLT observations of NIR stellar absorption features, and a means to obtain BH mass estimates from MIR ionic gas lines that can be applicable to Spitzer, and future JWST and SPICA observations. I will also discuss (dis)similarities in the nature, trigger mechanisms, morphologies, IR dust features, and warm molecular gas content of dust obscured galaxies as a function of z, as determined from HST and Spitzer data.