VIIZw 403: a BCD with a noncoeval starburst

Abstract

The recent history of star formation in VIIZw 403 is analyzed taking into account the dynamics of the starburst blown superbubble and the restrictions that follow from X-ray observations, and from our H$α$ data. Our results show that the starburst energizing VIIZw 403 is NOT coeval, but rather the star forming phase has lasted for more than 30Myr and at such a low pace that most probably the newly processed metals will not be ejected into the intergalactic medium.

1 page, 1 figure, Conference Proceedings: Ionized Gaseous Nebulae, to be published in Rev. Mex. A.A. Conf. Ser