  We have investigated the possibility of having a late time accelerated
expansion phase for the universe. We have used a dissipative fluid in
Brans-Dicke(BD) theory for this purpose. The model does not involve any
potential for the BD scalar field. We have obtained the best fit values for the
different parameters in our model by comparing our model predictions with SNIa
data and the also with the data from the ultra-compact radio sources.
