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The Gaia-ESO Survey: Churning through the Milky Way
M. R. Hayden, A. Recio-Blanco, P. de Laverny +29
We attempt to determine the relative fraction of stars that have undergone significant radial migration by studying the orbital properties of metal-rich ([Fe/H]) stars within…
Is the Milky Way still breathing? RAVE-Gaia streaming motions
I. Carrillo, I. Minchev, G. Kordopatis +26
We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution catalogue (TGAS) to compute the velocity fields yielded by the radial (VR), azimuthal…
Effects of the selection function on metallicity trends in spectroscopic surveys of the Milky Way
G. Nandakumar, M. Schultheis, M. Hayden +3
We investigate here the effect of the selection function on the metallicity distribution function (MDF) and on the vertical metallicity gradient by studying similar lines of sight…
Improved distances and ages for stars common to TGAS and RAVE
Paul J. McMillan, Georges Kordopatis, Andrea Kunder +15
We combine parallaxes from the first Gaia data release with the spectrophotometric distance estimation framework for stars in the fifth RAVE survey data release. The combined dista…
An artificial neural network to discover Hypervelocity stars: Candidates in Gaia DR1/TGAS
T. Marchetti, E. M. Rossi, G. Kordopatis +5
The paucity of hypervelocity stars (HVSs) known to date has severely hampered their potential to investigate the stellar population of the Galactic Centre and the Galactic Potentia…
Climbing the cosmic ladder with stellar twins in RAVE with Gaia
P. Jofre, G. Traven, K. Hawkins +17
We apply the twin method to determine parallaxes to 232,545 stars of the RAVE survey using the parallaxes of Gaia DR1 as a reference. To search for twins in this large dataset, we…
Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars
Gaia Collaboration, G. Clementini, L. Eyer +588
Parallaxes for 331 classical Cepheids, 31 Type II Cepheids and 364 RR Lyrae stars in common between Gaia and the Hipparcos and Tycho-2 catalogues are published in Gaia Data Release…
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…