A RAVE Investigation on Galactic open Clusters I. Radial velocities and
  metallicities
  Context. Galactic open clusters (OCs) mainly belong to the young stellar
population in the Milky Way disk, but are there groups and complexes of OCs
that possibly define an additional level in hierarchical star formation?
Current compilations are too incomplete to address this question, especially
regarding radial velocities (RVs) and metallicities ($[M/H]$). Aims. Here we
provide and discuss newly obtained RV and $[M/H]$ data, which will enable us to
reinvestigate potential groupings of open clusters and associations. Methods.We
extracted additional RVs and $[M/H]$ from the RAdial Velocity Experiment (RAVE)
via a cross-match with the Catalogue of Stars in Open Cluster Areas (CSOCA).
For the identified OCs in RAVE we derived RV and $[M/H]$ from a cleaned working
sample and compared the results with previous findings. Results. Although our
RAVE sample does not show the same accuracy as the entire survey, we were able
to derive reliable RV for 110 Galactic open clusters. For 37 OCs we publish RV
for the first time. Moreover, we determined $[M/H]$ for 81 open clusters,
extending the number of OCs with $[M/H]$ by 69.
