We have just finished the first tests at the telescope of an infrared camera designed and developed at the Instituto de Astrofisica de Canarias (IAC). This camera, based on a 256 X 256 focal plane array, has been built to operate at the 1.5 m Carlos Sanchez IR telescope (CST) in the Observatorio del Teide (Canary Islands, Spain). In this paper we

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Simultaneous UV and X-ray observations of the blazar PKS 0521-365 are combined with radio, IR, optical and gamma-ray data taken at different epochs to study the overall emission from 109 to 1023 Hz. The energy distribution declines from the IR to the UV range (alpha sub(opt-UV)=1.4 +/- 0.1), but hardens at higher frequencies. The remarkably flat X

Two-dimensional high spatial resoultion Fabry-Perot observations with TAURUS 2 at the William Herschel Telescope in La Palma, over the inner central regions of NGC 604 in M33, have been obtained. The data show a large variety of line profile shapes produced over the region. Some display clear splitting, or strong asymmetries, most likely caused by

EL OBJETO DE ESTA MEMORIA ES EL ESTUDIO DE LA RELACION ENTRE LOS PROCESOS DE FORMACION ESTELAR Y LA ACTIVIDAD EN EL NUCLEO DE LAS GALAXIAS. CON ESTE FIN SE ESTUDIA, EN PRIMER LUGAR, LA FORMACION ESTELAR EN LAS GALAXIAS ANALIZANDO ESTADISTICAMENTE MAS DE 500 REGIONES HII EN 55 GALAXIAS. A PARTIR DE ESTOS DATOS SE DETERMINAN FUNCIONES DE LUMINOSIDAD