489 citations · 3.3k across the 59 of their papers we have counts for
12 papers · 1 filter
A systematic DECam search for RR Lyrae in the outer halo of the Milky Way
Gustavo E. Medina, Ricardo R. Muñoz, Jeffrey L. Carlin +3
The discovery of very distant stars in the halo of the Milky Way provides valuable tracers on the Milky Way mass and its formation. Beyond 100 kpc from the Galactic center, most of…
Purveyors of fine halos III. Chemical abundance analysis of a potential omega Cen associate
Andreas J. Koch-Hansen, Camilla Juul Hansen, Linda Lombardo +3
Globular clusters (GCs) are important donors to the build-up of the Milky Way (MW) stellar halo, having contributed at the ten percent level over the Galactic history. Stars that o…
Mono-enriched stars and Galactic chemical evolution -- Possible biases in observations and theory
Camilla Juul Hansen, Andreas Koch, Lyudmila Mashonkina +9
A long sought after goal using chemical abundance patterns derived from metal-poor stars is to understand the Galactic chemical evolution (GCE) and to pin down the nature of the fi…
The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing at the origin of chemical abundance variations
Ekaterina Semenova, Maria Bergemann, Morgan Deal +10
Atomic diffusion and mixing processes in stellar interiors influence the structure and the surface composition of stars. Some of these processes cannot yet be modelled from the fir…
A Minimum Dilution Scenario for Supernovae and Consequences for Extremely Metal-Poor Stars
Mattis Magg, Thomas Nordlander, Simon C. O. Glover +6
To date no metal-free stars have been identified by direct observations. The most common method of constraining their properties is searching the spectra of the most metal-poor sta…
A wide angle view of the Sagittarius dwarf spheroidal galaxy -- II. A CEMP-r/s star in the Sagittarius dwarf Spheroidal Galaxy
L. Sbordone, C. J. Hansen, L. Monaco +5
We report on the discovery and chemical abundance analysis of the first CEMP-r/s star detected in the Sagittarius dwarf Spheroidal Galaxy, by means of UVES high resolution spectra.…