280 citations · 1k across the 15 of their papers we have counts for
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An old, metal-rich accreted stellar component in the Milky Way stellar disk
Diane K. Feuillet, Sofia Feltzing, Christian Sahlholdt +1
We study the possibility that the Milky Way's cool stellar disc includes mergers with ancient stars. Galaxies are understood to form in a hierarchical manner, where smaller (proto-…
Characterizing epochs of star formation across the Milky Way disc using age-metallicity distributions of GALAH stars
Christian L. Sahlholdt, Sofia Feltzing, Diane K. Feuillet
We provide a detailed map of the ages and metallicities of turnoff stars in the Milky Way disc based on data from GALAH DR3 and Gaia EDR3. From this map, we identify previously und…
Selecting accreted populations: metallicity, elemental abundances, and ages of the Gaia-Sausage-Enceladus and Sequoia populations
Diane K. Feuillet, Christian L. Sahlholdt, Sofia Feltzing +1
Identifying stars found in the Milky Way as having formed in situ or accreted can be a complex and uncertain undertaking. We use Gaia kinematics and APOGEE elemental abundances to…
The HR 1614 moving group is not a dissolving cluster
Iryna Kushniruk, Thomas Bensby, Sofia Feltzing +3
The HR 1614 overdensity in velocity space and has for a long time been known as an old (~2 Gyr) and metal-rich ([Fe/H]~0.2) nearby moving group that has a dissolving cluster origin…
The SkyMapper-Gaia RVS view of the Gaia-Enceladus-Sausage -- an investigation of the metallicity and mass of the Milky Way's last major merger
Diane K Feuillet, Sofia Feltzing, Christian Sahlholdt +1
We characterize the Gaia-Enceladus-Sausage kinematic structure recently discovered in the Galactic halo using photometric metallicities from the SkyMapper survey, and kinematics fr…
Characteristics of the two sequences seen in the high-velocity Hertzsprung-Russell diagram in Gaia DR2
Christian L. Sahlholdt, Luca Casagrande, Sofia Feltzing
In this study we use a sample of about 9 million SkyMapper stars with metallicities to investigate the properties of the two stellar populations seen in the high-velocity ($V_{\rm…
The Gaia-ESO survey: Calibrating a relationship between Age and the [C/N] abundance ratio with open clusters
G. Casali, L. Magrini, E. Tognelli +51
In the era of large high-resolution spectroscopic surveys, high-quality spectra can contribute to our understanding of the Galactic chemical evolution, providing chemical abundance…
Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s)
V. Silva Aguirre, M. Bojsen-Hansen, D. Slumstrup +22
Investigations of the origin and evolution of the Milky Way disk have long relied on chemical and kinematic identification of its components to reconstruct our Galactic past. Diffi…