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38 papers · 2 filters
The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
Romina Ahumada, Carlos Allende Prieto, Andres Almeida +310
This paper documents the sixteenth data release (DR16) from the Sloan Digital Sky Surveys; the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of…
Modelling the chemical evolution of Zr, La, Ce and Eu in the Galactic discs and bulge
V. Grisoni, G. Cescutti, F. Matteucci +3
We study the chemical evolution of Zr, La, Ce and Eu in the Milky Way discs and bulge by means of chemical evolution models compared with recent spectroscopic data. We consider det…
Abundances of disk and bulge giants from high-resolution optical spectra -- IV. Zr, La, Ce, Eu
Rebecca Forsberg, Henrik Jönsson, Nils Ryde +1
Stellar mass and metallicity are factors that affect the neutron-capture process. Due to this, the enrichment of the ISM and the abundance of neutron-capture elements vary with tim…
Disentangling the Arcturus stream
Iryna Kushniruk, Thomas Bensby
The Arcturus stream is an over-density of stars in velocity space and its origin has been much debated recently without any clear conclusion. Resolving the nature of the Arcturus s…
EDGE: The origin of scatter in ultra-faint dwarf stellar masses and surface brightnesses
Martin P. Rey, Andrew Pontzen, Oscar Agertz +4
We demonstrate how the least luminous galaxies in the Universe, ultra-faint dwarf galaxies, are sensitive to their dynamical mass at the time of cosmic reionization. We select a lo…
Imprint of the galactic acceleration scale on globular cluster systems
Michal Bílek, Srdjan Samurović, Florent Renaud
We report that the density profiles of globular cluster (GC) systems in a sample of 17 early-type galaxies (ETGs) show breaks at the radii where the gravitational acceleration exer…