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June 26, 2017, 9:13 pm
Partly sunny
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current pressure: 1010 mb
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The Gaia-ESO Public Survey

The Gaia-ESO Survey (GES)  is public spectroscopic survey presently on-going on the VLT  employing the FLAMES multiobject spectrograph (program 188.B-3002). It started on December 31, 2011 and will go on for 5 years, for a total of 300 nights.

GES  will observe 105 stars, systematically covering all major components of the MilkyWay, from halo to star forming regions, providing the first homogeneous overview of the distributions of kinematics and elemental abundances. GES will also observe about 100 open clusters of all masses, metallicity, position in the disk, and ages (except the still embedded ones).

The co-PIs of GES are G. Gilmore (IoA, Cambridge) and S. Randich (INAF-OA Arcetri). The GES collaboration involves about 400 reasearchers, mostly from European countries. The Italian contribution, beside the co-PI, is large. GES is organised in Working Groups, taking care of target selection, observation preparation, reduction, abundance analysis, etc.   Two of these WGs are coordinated by researcher at the Bologna Observatory,  Angela Bragaglia (WG4  – open cluster targets)  and Elena Pancino (WG5, calibrators & standards).  Two post-docs (Carmela Lardo and Paolo Donati) are heavily involved in GES.

Participants at OABO: G. Altavilla, M. Bellazzini, A. Bragaglia, F. Calura,  G. Cocozza, P. Donati,  G. Fiorentino, C. Lardo, E. Pancino, S. Ragaini, D. Romano, M. Tosi

Participants at DIFA: A. Mucciarelli, M. Cignoni (now at STScI)

See  the 2012 and 2013 presentation papers on The Messenger for more details (downloads: Gilmore et al. ; Randich & Gilmore).

For a full description and for updates, see the official GES webpage


Map of observed targets (provided by Cambridge Astronomy Survey Unit (CASU) - as in October 2013