RAVE-Gaia and the impact on Galactic archeology
  The new data release (DR5) of the RAdial Velocity Experiment (RAVE) includes
radial velocities of 520,781 spectra of 457,588 individual stars, of which
215,590 individual stars are released in the Tycho-Gaia astrometric solution
(TGAS) in Gaia DR1. Therefore, RAVE contains the largest TGAS overlap of the
recent and ongoing Milky Way spectroscopic surveys. Most of the RAVE stars also
contain stellar parameters (effective temperature, surface gravity, overall
metallicity), as well as individual abundances for Mg, Al, Si, Ca, Ti, Fe, and
Ni. Combining RAVE with TGAS brings the uncertainties in space velocities down
by a factor of 2 for stars in the RAVE volume -- 10 km/s uncertainties in space
velocities are now able to be derived for the majority (70%) of the RAVE-TGAS
sample, providing a powerful platform for chemo-dynamic analyses of the Milky
Way. Here we discuss the RAVE-TGAS impact on Galactic archaeology as well as
how the Gaia parallaxes can be used to break degeneracies within the RAVE
spectral regime for an even better return in the derivation of stellar
parameters and abundances.
