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The masses of very neutron-deficient nuclides close to the astrophysical rp-and nu p-process paths have been determined with the Penning trap facilitiesJYFLTRAP at JYFL/Jyv\"askyl\"a and SHIPTRAP at GSI/Darmstadt. Isotopes fromyttrium (Z = 39) to palladium (Z = 46) have been produced in heavy-ionfusion-evaporation reactions. In total 21 nuclides were studied and almost halfof the mass values were experimentally determined for the first time: 88Tc,90-92Ru, 92-94Rh, and 94,95Pd. For the 95Pdm, (21/2^+) high-spin state, a firstdirect mass determination was performed. Relative mass uncertainties oftypically $\delta m / m = 5 \times 10^{-8}$ were obtained. The impact of thenew mass values has been studied in nu p-process nucleosynthesis calculations.The resulting reaction flow and the final abundances are compared to thoseobtained with the data of the Atomic Mass Evaluation 2003.

Mass measurements in the vicinity of the rp-process and the nu p-process paths with JYFLTRAP and SHIPTRAP