Spectroscopic survey of the Galaxy with Gaia- I. Design and performance of the Radial Velocity Spectrometer
Spectroscopic survey of the Galaxy with Gaia- I. Design and performance of the Radial Velocity Spectrometer
The definition and optimisation studies for the Gaia satellite spectrograph, the Radial Velocity Spectrometer (RVS), converged in late 2002 with the adoption of the instrument baseline. This paper reviews the characteristics of the selected configuration and presents its expected performance. The RVS is a 2.0 by 1.6 degree integral field …