The Galactic science drivers cover many different areas (from the formation of the Galaxy components to the characterization of exoplanet host stars) and a large variety of target types (from very metal-poor stars to metal-rich ones; from solar-like stars, to luminous giants). Galactic science cases will make use of all spectrographs, including the IFS. Analysis of the simulated spectra, ETC output, and mock catalogues will allow the derivation of the requirements for the most demanding cases. Those requirements will apply to the telescope (primary mirror aperture and field of view), MOS High Resolution Mode (in particular spectral resolution and wavelength coverage), and Medium Resolution Mode (mainly spectral resolution).
© WST telescope