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The Gaia-ESO Survey: open clusters in Gaia-DR1 - a way forward to stellar age calibration
S. Randich, E. Tognelli, R. Jackson +42
We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey data, enable the comparison of observed open star cluster sequences with stellar evolutiona…
The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264
L. Venuti, L. Prisinzano, G. G. Sacco +21
We explore the structure and star formation history of the open cluster NGC 2264 (~3 Myr). We combined spectroscopic data from the Gaia-ESO Survey (GES) with multi-wavelength photo…
The Gaia-ESO Survey: Matching Chemo-Dynamical Simulations to Observations of the Milky Way
B. B. Thompson, C. G. Few, M. Bergemann +39
The typical methodology for comparing simulated galaxies with observational surveys is usually to apply a spatial selection to the simulation to mimic the region of interest covere…
The Gaia-ESO Survey: double, triple and quadruple-line spectroscopic binary candidates
T. Merle, S. Van Eck, A. Jorissen +35
The Gaia-ESO Survey (GES) is a large spectroscopic survey that provides a unique opportunity to study the distribution of spectroscopic multiple systems among different populations…
The structure of Chariklo's rings from stellar occultations
D. Bérard, B. Sicardy, J. I. B. Camargo +79
Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklo during a stellar occultation observed on 2013 June 3. Following this disc…
On the assessment of the nature of open star clusters and the determination of their basic parameters with limited data
Giovanni Carraro, Anton F. Seleznev, G. Baume +1
Our knowledge of stellar evolution and of the structure and chemical evolution of the Galactic disk largely builds on the study of open star clusters. Because of their crucial role…
A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
G. Beccari, M. G. Petr-Gotzens, H. M. J. Boffin +15
As part of the Accretion Discs in H with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the hi…
On the existence of young embedded clusters at high Galactic latitude
D. G. Turner, G. Carraro, E. A. Panko
Careful analyses of photometric and star count data available for the nine putative young clusters identified by Camargo et al. (2015, 2016) at high Galactic latitudes reveal that…
Binarity as the solution to the stellar evolution enigma posed by NGC 6791
Giovanni Carraro, Omar G. Benvenuto
Binary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal rich open cluster NGC~6791. Employing an updated version of our bi…
The Gaia-ESO Survey: Exploring the complex nature and origins of the Galactic bulge populations
A. Rojas-Arriagada, A. Recio-Blanco, P. de Laverny +36
Abridged: We used the fourth internal data release of the Gaia-ESO survey to characterize the bulge chemistry, spatial distribution, kinematics, and to compare it chemically with t…
The Gaia-ESO Survey: radial distribution of abundances in the Galactic disc from open clusters and young field stars
L. Magrini, S. Randich, G. Kordopatis +44
The spatial distribution of elemental abundances in the disc of our Galaxy gives insights both on its assembly process and subsequent evolution, and on the stellar nucleogenesis of…
Gaia-ESO Survey: global properties of clusters Trumpler 14 and 16 in the Carina Nebula
F. Damiani, A. Klutsch, R. D. Jeffries +31
We present the first extensive spectroscopic study of the global population in star clusters Trumpler~16, Trumpler~14 and Collinder~232 in the Carina Nebula, using data from the Ga…
The Gaia-ESO Survey: the present-day radial metallicity distribution of the Galactic disc probed by pre-main-sequence clusters
L. Spina, S. Randich, L. Magrini +35
The radial metallicity distribution in the Galactic thin disc represents a crucial constraint for modelling disc formation and evolution. Open clusters allow us to derive both the…
On the mass of the Galactic star cluster NGC 4337
Anton F. Seleznev, Giovanni Carraro, Roberto Capuzzo Dolcetta +2
Only a small number of galactic open clusters survives for longer than few hundred million years. Longer lifetimes are routinely explained in term of larger initial masses, particu…
Extinction in the Star Cluster SAI~113 and Galactic Structure in Carina
Giovanni Carraro, David Turner, Daniel Majaess +3
Photometric CCD {\it UBVI} photometry obtained for 4860 stars surrounding the embedded southern cluster SAI~113 (Skiff~8) is used to examine the reddening in the field and deri…