Search Results - "KORDOPATIS, G"
-
1
Estimating stellar birth radii and the time evolution of Milky Way’s ISM metallicity gradient
Published in Monthly notices of the Royal Astronomical Society (01-12-2018)Get full text
Journal Article -
2
The Pristine Survey – VIII. The metallicity distribution function of the Milky Way halo down to the extremely metal-poor regime
Published in Monthly notices of the Royal Astronomical Society (11-03-2020)“…ABSTRACT The Pristine survey uses narrow-band photometry to derive precise metallicities down to the extremely metal-poor regime ($ \rm [Fe/H] \lt -3$), and…”
Get full text
Journal Article -
3
Is the Milky Way still breathing? RAVE–Gaia streaming motions
Published in Monthly notices of the Royal Astronomical Society (01-04-2018)“…We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution (TGAS) catalogue to compute the velocity fields yielded by the…”
Get full text
Journal Article -
4
Constraining the Galaxy's dark halo with RAVE stars
Published in Monthly notices of the Royal Astronomical Society (11-12-2014)“…We use the kinematics of ∼200 000 giant stars that lie within ∼1.5 kpc of the plane to measure the vertical profile of mass density near the Sun. We find that…”
Get full text
Journal Article -
5
A Wide Metallicity Range for Gyr-old Stars in the Nuclear Star Cluster
Published in Astrophysical journal. Letters (01-11-2023)“…We report metallicities for three ∼Gyr-old stars in the Milky Way nuclear star cluster (NSC) using high-resolution near-infrared spectroscopy. We derive…”
Get full text
Journal Article -
6
The wobbly Galaxy: kinematics north and south with RAVE red-clump giants
Published in Monthly notices of the Royal Astronomical Society (21-11-2013)“…The RAdial Velocity Experiment survey, combined with proper motions and distance estimates, can be used to study in detail stellar kinematics in the extended…”
Get full text
Journal Article -
7
Chemodynamic subpopulations of the Carina dwarf galaxy
Published in Monthly notices of the Royal Astronomical Society (01-04-2016)“…We study the chemodynamical properties of the Carina dwarf spheroidal by combining an intermediate spectroscopic resolution data set of more than 900 red giant…”
Get full text
Journal Article -
8
The Pristine survey – XV. A CFHT ESPaDOnS view on the Milky Way halo and disc populations
Published in Monthly notices of the Royal Astronomical Society (2022)“…We present a one-dimensional, local thermodynamic equilibrium homogeneous analysis of 132 stars observed at high resolution with ESPaDOnS. This represents the…”
Get full text
Journal Article -
9
The Pristine survey – XIX. Cu and Zn abundances in metal-poor giants
Published in Monthly notices of the Royal Astronomical Society (01-01-2023)“…Metal-poor stars formed from a gas enriched by the ejecta of the explosion of one/few generations of first massive stars. With the Pristine photometry combined…”
Get full text
Journal Article -
10
New distances to RAVE stars
Published in Monthly notices of the Royal Astronomical Society (2014)“…Probability density functions (pdfs) are determined from new stellar parameters for the distance moduli of stars for which the RAdial Velocity Experiment…”
Get full text
Journal Article -
11
The Pristine survey – XIV. Chemical analysis of two ultra-metal-poor stars
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…ABSTRACT Elemental abundances of the most metal-poor stars reflect the conditions in the early Galaxy and the properties of the first stars. We present a…”
Get full text
Journal Article -
12
The rich are different: evidence from the RAVE survey for stellar radial migration
Published in Monthly notices of the Royal Astronomical Society (11-03-2015)“…Using the RAdial Velocity Experiment fourth data release (RAVE DR4), and a new metallicity calibration that will be also taken into account in the future RAVE…”
Get full text
Journal Article -
13
CHROMOSPHERICALLY ACTIVE STARS IN THE RAVE SURVEY. II. YOUNG DWARFS IN THE SOLAR NEIGHBORHOOD
Published in The Astrophysical journal (20-01-2017)“…ABSTRACT A large sample of over 38,000 chromospherically active candidate solar-like stars and cooler dwarfs from the RAVE survey is addressed in this paper…”
Get full text
Journal Article -
14
Galactic kinematics and dynamics from Radial Velocity Experiment stars
Published in Monthly notices of the Royal Astronomical Society (01-04-2014)“…We analyse the kinematics of ∼400 000 stars that lie within ∼2 kpc of the Sun and have spectra measured in the Radial Velocity Experiment. We decompose the…”
Get full text
Journal Article -
15
The Gaia-ESO Survey: a quiescent Milky Way with no significant dark/stellar accreted disc
Published in Monthly notices of the Royal Astronomical Society (01-07-2015)“…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…”
Get full text
Journal Article -
16
Characterizing the high-velocity stars of RAVE: the discovery of a metal-rich halo star born in the Galactic disc
Published in Monthly notices of the Royal Astronomical Society (21-02-2015)“…We aim to characterize high-velocity (HiVel) stars in the solar vicinity both chemically and kinematically using the fourth data release of the RAdial Velocity…”
Get full text
Journal Article -
17
In the thick of it: metal-poor disc stars in RAVE
Published in Monthly notices of the Royal Astronomical Society (21-12-2013)“…By selecting in the Radial Velocity Experiment-fourth data release (RAVE-DR4) survey the stars located between 1 and 2 kpc above the Galactic plane, we…”
Get full text
Journal Article -
18
The Gaia-ESO Survey: the selection function of the Milky Way field stars
Published in Monthly notices of the Royal Astronomical Society (21-07-2016)“…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…”
Get full text
Journal Article -
19
Climbing the cosmic ladder with stellar twins in RAVE with Gaia
Published in Monthly notices of the Royal Astronomical Society (01-12-2017)“…Abstract 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…”
Get full text
Journal Article -
20
An optimized tiling pattern for multiobject spectroscopic surveys: application to the 4MOST survey
Published in Monthly notices of the Royal Astronomical Society (01-10-2020)“…ABSTRACT Large multiobject spectroscopic surveys require automated algorithms to optimize their observing strategy. One of the most ambitious upcoming…”
Get full text
Journal Article