In this thesis the correlation between star formation and dynamical state of a statistical well defined selection of galaxy clusters havebeen studied. From simulations and theory it is expected strongcorrelations between the dynamical state of a galaxy cluster and thehistory of how its matter has gathered, and the present and prior starformation rate in the cluster. Several physical mechanisms may be responsible for the evolution of the star formation rate in a galaxy cluster, and the environments where these mechanisms are most efficient, differ.The correlation between star formation and the dynamical state of galaxy clusters can provide clues to which physical cluster-related processes are responsible for the quenching of star formation inhigh-density environments.
The data set used consists of images of 35 galaxy clusters in UV takenwith the Nordic Optical Telescope (NOT) at la Palma.The distribution of X-ray luminous gas is a good measurement of thedegree of dynamical equilibrium in a galaxy cluster. Existing X-raymeasurements are used to classify the galaxy clusters according to their dynamical state, which again is compared with the calculated star formation activity.