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Gaia Focused Product Release: Spatial distribution of two diffuse interstellar bands
Gaia Collaboration, M. Schultheis, H. Zhao +15
Diffuse interstellar bands (DIBs) are absorption features seen in optical and infrared spectra of stars that are probably caused by large and complex molecules in the ISM. Here we…
The Gaia-ESO survey: mapping the shape and evolution of the radial abundance gradients with open clusters
L. Magrini, C. Viscasillas Vazquez, L. Spina +27
The spatial distribution of elemental abundances and their time evolution are among the major constraints to disentangle the scenarios of formation and evolution of the Galaxy. We…
Gaia DR3: Apsis III -- Non-stellar content and source classification
L. Delchambre, C. A. L. Bailer-Jones, I. Bellas-Velidis +78
Context. As part of the third Gaia data release, we present the contributions of the non-stellar and classification modules from the eighth coordination unit (CU8) of the Data Proc…
Gaia Data Release 3: Astrophysical parameters inference system (Apsis) I -- methods and content overview
O. L. Creevey, R. Sordo, F. Pailler +86
Gaia Data Release 3 contains a wealth of new data products for the community. Astrophysical parameters are a major component of this release. They were produced by the Astrophysica…
Gaia Data Release 3: Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy
A. Recio-Blanco, P. de Laverny, P. A. Palicio +77
The chemo-physical parametrisation of stellar spectra is essential for understanding the nature and evolution of stars and of Galactic stellar populations. Gaia DR3 contains the pa…
The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy
S. Randich, G. Gilmore, L. Magrini +161
In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with the general aim of delivering stellar parameters and elemental abundances f…
Gaia-ESO Survey: Detailed elemental abundances in red giants of the peculiar globular cluster NGC 1851
G. Tautvaisiene, A. Drazdauskas, A. Bragaglia +24
Context. NGC 1851 is one of several globular clusters for which multiple stellar populations of the subgiant branch have been clearly identified and a difference in metallicity det…
Gaia Early Data Release 3: Structure and properties of the Magellanic Clouds
Gaia Collaboration, X. Luri, L. Chemin +417
We compare the Gaia DR2 and Gaia EDR3 performances in the study of the Magellanic Clouds and show the clear improvements in precision and accuracy in the new release. We also show…
Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry
Gaia Collaboration, S. A. Klioner, F. Mignard +414
Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quali…
The Gaia-ESO Survey: Oxygen abundance in the Galactic thin and thick disks
Mariagrazia Franchini, Carlo Morossi, Paolo Di Marcantonio +18
We analyze the oxygen abundances of a stellar sample representative of the two major Galactic populations: the thin and thick disks. The aim is to investigate the differences betwe…
Differential abundances of open clusters and their tidal tails: chemical tagging and chemical homogeneity
L. Casamiquela, Y. Tarricq, C. Soubiran +4
Well studied Open Clusters (OCs) in the Solar neighbourhood are used as reference objects to test galactic and stellar theories. For that purpose their chemical composition needs t…
The Gaia-ESO survey: Calibrating a relationship between Age and the [C/N] abundance ratio with open clusters
G. Casali, L. Magrini, E. Tognelli +51
In the era of large high-resolution spectroscopic surveys, high-quality spectra can contribute to our understanding of the Galactic chemical evolution, providing chemical abundance…
Gaia Data Release 2. Summary of the contents and survey properties
Gaia Collaboration, A. G. A. Brown, A. Vallenari +4
We present the second Gaia data release, Gaia DR2, consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources…
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…
OCCASO II. Physical parameters and Fe abundances of Red Clump stars in 18 Open Clusters
L. Casamiquela, R. Carrera, S. Blanco-Cuaresma +13
Open Clusters have long been used to study the chemo-dynamical evolution of the Galactic disk. This requires an homogeneously analysed sample covering a wide range of ages and dist…
The Gaia-ESO Survey: Probes of the inner disk abundance gradient
H. R. Jacobson, E. D. Friel, L. Jilkova +41
The nature of the metallicity gradient inside the solar circle (R_GC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it stee…
The Gaia-ESO Survey: Insights on the inner-disc evolution from open clusters
L. Magrini, S. Randich, P. Donati +37
Context. The inner disc, linking the thin disc with the bulge, has been somehow neglected in the past because of intrinsic difficulties in its study, due, e.g., to crowding and hig…
Kinematics and chemistry of recently discovered Reticulum 2 and Horologium 1 dwarf galaxies
Sergey E. Koposov, Andrew R. Casey, Vasily Belokurov +17
Photometry alone is not sufficient to unambiguously distinguish between ultra-faint star clusters and dwarf galaxies because of their overlap in morphological properties. Here we r…
The Gaia-ESO Survey: a quiescent Milky Way with no significant dark/stellar accreted disc
G. R. Ruchti, J. I. Read, S. Feltzing +26
According to our current cosmological model, galaxies like the Milky Way are expected to experience many mergers over their lifetimes. The most massive of the merging galaxies will…
Gaia FGK Benchmark Stars and their reference parameters
Paula Jofre, Ulrike Heiter, Sergi Blanco-Cuaresma +1
In this article we summarise on-going work on the so-called Gaia FGK Benchmark Stars. This work consists of the determination of their atmospheric parameters and of the constructio…
On the metallicity of open clusters II. Spectroscopy
U. Heiter, C. Soubiran, M. Netopil +1
In a series of three papers, we investigate the current status of published metallicities for open clusters that were derived from a variety of photometric and spectroscopic method…
Gaia FGK Benchmark Stars - Metallicity
Paula Jofre, U. Heiter, C. Soubiran +22
To calibrate automatic pipelines that determine atmospheric parameters of stars, one needs a sample of stars -- ``benchmark stars'' -- with well defined parameters to be used as a…