Institution: | 1. Instituto de Estructura de la Materia, CSIC, Serrano 121, E-28006, Madrid, Spain;2. Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA;3. Departamento de Astrofísica, Facultad de CC. Físicas, Universidad Complutense de Madrid, Avenida Complutense S/N, E-28040, Madrid, Spain;4. Ritter Astrophysical Research Center, University of Toledo, 2801 West Bancroft Street, Toledo, OH 43603, USA |