Tracing the star formation history of cluster galaxies using the Halpha/UV flux ratio

J. Iglesias-Paramo, A. Boselli, G. Gavazzi +1

Since the Halpha and UV fluxes from galaxies are sensitive to stellar populations of ages < 10^7 and ~ 10^8 yr respectively, their ratio f(Halpha)/f(UV) provides us with a tool to…