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The momentum distributions, natural orbits, spectroscopic factors andquasi-hole  wave functions of the C12, O16, Ca40, Ca48, and Pb208 doubly closed shellnuclei, have been calculated in the framework of the Correlated Basis Functiontheory, by using the Fermi hypernetted chain resummation techniques. Thecalculations have been done by using the realistic Argonne v8' nucleon-nucleonpotential, together with the Urbana IX three-body interaction. Operatordependent correlations, which consider channels up to the tensor ones, havebeen  used. We found noticeable effects produced by the correlations. For highmomentum values, the momentum distributions show large enhancements withrespect to the independent particle model results. Natural orbits occupationnumbers are depleted by about the 10\% with respect to the independent particlemodel values. The effects of the correlations on the spectroscopic factors arelarger on the more deeply bound states.Comment: Modified version of the previous paper (there are new figures). The  paper has been accepted for publication in Physical Review

Momentum distributions and spectroscopic factors of doubly closed shell nuclei in correlated basis function theory