9 papers
HARPS Abundances with Korg I: 22 Element Abundances for 426 Red Giant Stars
Sarah E. Aquilina, Melissa Ness, Adam J. Wheeler +1
Large stellar surveys have revealed the global abundance structure of the Milky Way, but small high-fidelity spectral samples offer a critical complement of nucleosynthetic depth.…
The chemodynamical memory of a major merger in a NIHAO-UHD Milky Way analogue -- II. Were Splash stars heated or already born hot?
Sven Buder, Tobias Buck, Ãsa Skúladóttir +3
One of the most debated consequences of the Milky Way's last major merger is the so-called : stars with disc-like chemistry but halo-like kinematics, often interpreted as e…
The chemodynamical memory of a major merger in a NIHAO-UHD Milky Way analogue -- I. A golden thread through time and space
Sven Buder, Tobias Buck, Ãsa Skúladóttir +3
Understanding how past major mergers shaped the Milky Way's present-day structure is a key goal of Galactic archaeology. The Galaxy's chemical and dynamical structure retains the i…
The GALAH Survey: Neutron-Capture Elemental Abundances for 350,000 Gaia-RVS Spectra and the Chemodynamics of Accreted Structures
Pradosh Barun Das, Daniel B. Zucker, Aldo Mura-Guzmán +16
We present a comprehensive data-driven spectroscopic analysis of 357,415 red giant stars using Gaia DR3 Radial Velocity Spectrometer (RVS) spectra (8460-8700 A; ),…
Turbulent gas-rich discs at high redshift: origin of thick stellar discs through 3D 'baryon sloshing'
Joss Bland-Hawthorn, Thor Tepper-Garcia, Oscar Agertz +8
In response to recent observations from JWST and ALMA, we explore a new class of dynamically self-consistent models using our AGAMA/Ramses hydrodynamic N-body framework (Nexus) tha…
Optical spectroscopic signatures of the red giant evolutionary state
Ella Xi Wang, Melissa Ness, Thomas Nordlander +17
Modern spectroscopic surveys output large data volumes. Theoretical models provide a means to transform the information encoded in these data to measurements of physical stellar pr…