The Gaia-ESO Survey: the selection function of the Milky Way field stars

DOI: 
10.1093/mnras/stw1011
Publication date: 
01/07/2016
Main author: 
Stonkutė, E.
IAA authors: 
Costado, M. T.
Authors: 
Stonkutė, E.;Koposov, S. E.;Howes, L. M.;Feltzing, S.;Worley, C. C.;Gilmore, G.;Ruchti, G. R.;Kordopatis, G.;Randich, S.;Zwitter, T.;Bensby, T.;Bragaglia, A.;Smiljanic, R.;Costado, M. T.;Tautvaišienė, G.;Casey, A. R.;Korn, A. J.;Lanzafame, A. C.;Pancino, E.;Franciosini, E.;Hourihane, A.;Jofré, P.;Lardo, C.;Lewis, J.;Magrini, L.;Monaco, L.;Morbidelli, L.;Sacco, G. G.;Sbordone, L.
Journal: 
Monthly Notices of the Royal Astronomical Society
Refereed: 
Yes
Publication type: 
Article
Pages: 
1131-1146
Abstract: 
The Gaia-ESO Survey was designed to target all major Galactic components (i.e., bulge, thin and thick discs, halo and clusters), with the goal of constraining the chemical and dynamical evolution of the Milky Way. This paper presents the methodology and considerations that drive the selection of the targeted, allocated and successfully observed Milky Way field stars. The detailed understanding of the survey construction, specifically the influence of target selection criteria on observed Milky Way field stars is required in order to analyse and interpret the survey data correctly. We present the target selection process for the Milky Way field stars observed with VLT/FLAMES and provide the weights that characterise the survey target selection. The weights can be used to account for the selection effects in the Gaia-ESO Survey data for scientific studies. We provide a couple of simple examples to highlight the necessity of including such information in studies of the stellar populations in the Milky Way.
Database: 
ADS
SCOPUS
WOK
URL: 
https://ui.adsabs.harvard.edu/#abs/2016MNRAS.460.1131S/abstract
ADS Bibcode: 
2016MNRAS.460.1131S
Keywords: 
general;surveys;techniques: spectroscopic;stars:general;Galaxy: evolution