  Strange quark stars with a crust and strange dwarfs consisting of a compact
strange quark core and an extended crust are investigated in terms of a bag
model. The crust, which consists of atomic nuclei and degenerate electrons, has
a limiting density of ro_ cr=ro_drip=4.3*10^11g/cm^3. A series of
configurations are calculated for two sets of bag model parameters and three
different values of ro_cr (10^9g/cm^3<=ro_cr<=ro_drip) to find the dependence
of a star's mass M and radius R on the central density. Sequences of stars
ranging from compact strange stars to extended strange dwarfs are constructed
out of strange quark matter with a crust. The effect of the bag model
parameters and limiting crust density ro_cr on the parameters of the strange
stars and strange dwarfs is examined. The strange dwarfs are compared with
ordinary white dwarfs and observational differences between the two are pointed
out.
