1. Velocity and abundance precisions for future high-resolution spectroscopic surveys
- Subjects
Galaxy: evolution ,GALACTIC THICK DISC ,DWARF SPHEROIDAL GALAXIES ,METAL-POOR STARS ,MILKY-WAY BULGE ,CHEMICAL EVOLUTION ,methods: data analysis ,STELLAR PARAMETERS ,BAADES WINDOW GIANTS ,Galaxy: abundances ,NEUTRON-CAPTURE ,KECK HIRES SPECTRA ,Galaxy: kinematics and dynamics ,FLAMES-GIRAFFE SPECTRA ,instrumentation: spectrographs - Abstract
In preparation for future, large-scale, multi-object, high-resolution spectroscopic surveys of the Galaxy, we present a series of tests of the precision in radial velocity and chemical abundances that any such project can achieve at a 4 m class telescope. We briefly discuss a number of science cases that aim at studying the chemo-dynamical history of the major Galactic components (bulge, thin and thick disks, and halo) - either as a follow-up to the Gaia mission or on their own merits. Based on a large grid of synthetic spectra that cover the full range in stellar parameters of typical survey targets, we devise an optimal wavelength range and argue for a moderately high-resolution spectrograph. As a result, the kinematic precision is not limited by any of these factors, but will practically only suffer from systematic effects, easily reaching uncertainties
- Published
- 2013