Abstract
The recent history of star formation in VII Zw 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 alpha data. Our results show that the starburst energizing VII Zw 403 is not coeval, but rather the star forming phase has lasted for more than 30 Myr and at such a low pace that most probably the newly processed metals will not be ejected into the intergalactic medium.
