A spectroscopic survey of the Thick Disc outside the Solar neighbourhood: A comparison with the Besançon model

G. Kordopatis; A. Recio-Blanco; P. de Laverny; G. Gilmore; V. Hill; R.F.G. Wyse; A. Helmi; A. Bijaoui; C. Ordenovic; M. Zoccali; O. Bienaymé

doi:10.1051/eas/1045070

All issues

Volume 45 (2010)

EAS Publications Series, 45 (2010) 405-408

Abstract

Issue		EAS Publications Series Volume 45, 2010 GAIA: At the Frontiers of Astrometry


Page(s)		405 - 408
DOI		https://doi.org/10.1051/eas/1045070
Published online		15 February 2011

GAIA: At the Frontiers of Astrometry
C. Turon, F. Meynadier and F. Arenou (eds)
EAS Publications Series, 45 (2010) 405-408

A spectroscopic survey of the Thick Disc outside the Solar neighbourhood: A comparison with the Besançon model

G. Kordopatis, A. Recio-Blanco, P. de Laverny, G. Gilmore, V. Hill, R.F.G. Wyse, A. Helmi, A. Bijaoui, C. Ordenovic, M. Zoccali and O. Bienaymé

Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d’Azur, Cassiopée, France
e-mail: Georges.Kordopatis@oca.eu

Abstract

A spectroscopic survey of nearly 700 stars probing the Galactic Thick Disc far from the Solar neighbourhood is performed. The MATISSE (MATrix Inversion for Spectral SynthEsis) algorithm is developed and trained in order to automatically obtain atmospheric parameters of stars. The derived effective temperatures, surface gravities and overall metallicities are then combined to stellar evolution isochrones, radial velocities and proper motions to derive the distances, kinematics and orbital parameters of the sample stars. Results are compared with simulations from the Besançon model of the Milky Way.