311 citations · 742 across the 12 of their papers we have counts for
12 papers
Carbon measurements in two ultra-faint dwarf galaxies: Grus II and Tucana IV
Valentina Verdiani, Ása Skúladóttir, Romain Lucchesi +7
The ultra-faint dwarf galaxies (UFDs) are some of the oldest and most metal-poor environments in the Local Group. In particular, they are predicted to host the first stars (only H…
Disentangling Milky Way halo populations at low metallicities using [Al/Fe]
H. Ernandes, Á. Skúladóttir, S. Feltzing +1
Differentiating between in-situ and accreted populations in the Milky Way halo is a challenging task. Various kinematic spaces are often used to identify distinct accreted populati…
Large databases of metal-poor stars corrected for three-dimensional and/or non-local thermodynamic equilibrium effects
I. Koutsouridou, Á. Skúladóttir, S. Salvadori
Early chemical enrichment processes can be revealed by the careful study of metal-poor stars. In our Local Group, we can obtain spectra of individual stars to measure their precise…
Gaia-Sausage-Enceladus star formation history as revealed by detailed elemental abundances
H. Ernandes, D. Feuillet, S. Feltzing +1
The Gaia-Sausage-Enceladus was the last major merger and central turning point in the Milky Way's story. This event, comparable in mass to the Large Magellanic Cloud today, left be…
Strong nebular HeII emission induced by He ionizing photons escaping through the clumpy winds of massive stars
Arpita Roy, Mark R. Krumholz, Stefania Salvadori +8
The origin of nebular HeII-emission in both local and high-redshift galaxies remains an unsolved problem. Various theories have been proposed to explain it, including HeII-ionizati…
Chemical Evolution of R-process Elements in Stars (CERES). III. Chemical abundances of neutron capture elements from Ba to Eu
L. Lombardo, C. J. Hansen, F. Rizzuti +11
The chemical abundances of elements such as barium and the lanthanides are essential to understand the nucleosynthesis of heavy elements in the early Universe as well as the contri…
Horizons: Nuclear Astrophysics in the 2020s and Beyond
H. Schatz, A. D. Becerril Reyes, A. Best +162
Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the…
Neutron-capture elements in dwarf galaxies II: Challenges for the s- and i-processes at low metallicity
Ása Skúladóttir, Camilla Juul Hansen, Arthur Choplin +3
The slow () and intermediate () neutron () capture processes occur both in asymptotic giant branch (AGB) stars, and in massive stars. To study the build-up of the - and…
Carbon, oxygen, and iron abundances in disk and halo stars. Implications of 3D non-LTE spectral line formation
A. M. Amarsi, P. E. Nissen, Á. Skúladóttir
The abundances of carbon, oxygen, and iron in late-type stars are important parameters in exoplanetary and stellar physics, as well as key tracers of stellar populations and Galact…
4MOST: Project overview and information for the First Call for Proposals
R. S. de Jong, O. Agertz, A. Agudo Berbel +335
We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Vis…
VLT/FLAMES high-resolution chemical abundances in Sculptor: a textbook dwarf spheroidal galaxy
Vanessa Hill, Ása Skúladóttir, Eline Tolstoy +12
We present detailed chemical abundances for 99 red-giant branch stars in the centre of the Sculptor dwarf spheroidal galaxy, obtained from high-resolution VLT/FLAMES spectroscopy.…
Zinc in the Sculptor dwarf spheroidal galaxy
Ása Skúladóttir, Eline Tolstoy, Stefania Salvadori +2
From ESO VLT/FLAMES/GIRAFFE spectra, abundance measurements of Zn have been made in 100 individual red giant branch (RGB) stars in the Sculptor dwarf spheroidal galaxy. Th…