Institution: | Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina;Instituto de Astronomía Teórica y Experimental, Conicet, Argentina;Department of Physics and Astronomy, University of Victoria, BC, Canada;Max-Planck-Institut für Astrophysik, D-85740 Garching, Germany;Department of Astronomy, University of California, Berkeley, CA 94720, USA |