The stellar populations of the Milky Way in CFHTLS fields

M. Guittet (1) , M. Haywood (1) , M. Schultheis (2)

1 GEPI - Galaxies, Etoiles, Physique, Instrumentation
2 UTINAM - Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213)

We investigate the characteristics of the thick disk in the Canada – France – Hawaii – Telescope Legacy Survey (CFHTLS) fields, complemented at bright magnitudes with Sloan Digital Sky Survey (SDSS) data. The ([Fe/H], Z) distributions are derived in the W1 and W3 fields, and compared with simulated maps produced using the Besançon model. It is shown that the thick disk, represented in star-count models by a distinct component, is not an adequate description of the observed ([Fe/H], Z) distributions in these fields.

Domaines: Astrophysique [astro-ph]

M. Guittet, M. Haywood, M. Schultheis. The stellar populations of the Milky Way in CFHTLS fields. The stellar populations of the Milky Way in CFHTLS fields, 2011, Grand Bornand, France. pp.04004, ⟨10.1051/epjconf/20121904004⟩. ⟨hal-00676564⟩