Espectroscopía de campo integral de la región central de Messier 83

MAST, D.; DÍAZ, R.; AGUERO, MARIA P.; WEIDMANN, W; CARRANZA, G.; GIMENO, G.,

Congreso; 45 Reunión Anual de la Asociación Argentina de Astronomía; 2002

The circumnuclear regions of galaxies are frequent scenarios for starbursts and other extraordinary events. Observations of the kinematics and physical properties of the ionized gas show that bars, resonances, gas flux and tidal forces play a very important role in their evolution. M 83, with its low inclination and proximity, presents one of the best opportunities for studying all these phenomena in one object. We performed two-dimensional spectroscopic observations with multi-pupils, a practically new technique for the observation of southern objects. The main preliminary results are the kinematical evidence of the presence of a secondary nucleus 3.2'' NW of the optical continuum center and the confirmation of the existence of an inner ring-like structure in the ionized gas.