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22 papers · 2 filters
WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet
M. I. Arnaudova, S. Das, D. J. B. Smith +62
We present a detailed study of the large-scale shock front in Stephan's Quintet, a byproduct of past and ongoing interactions. Using integral-field spectroscopy from the new Willia…
Effects of secular growth and mergers on the evolution of metallicity gradients and azimuthal variations in a Milky Way-like galaxy
Florent Renaud, Bridget Ratcliffe, Ivan Minchev +4
We analyze the evolution of the radial profiles and the azimuthal variations of the stellar metallicities from the Vintergatan simulation of a Milky Way-like galaxy. We find that n…
Abundance ties: Nephele and the globular cluster population accreted with Cen. Based on APOGEE DR17 and Gaia EDR3
Giulia Pagnini, Paola Di Matteo, Misha Haywood +8
The peculiar Galactic globular cluster Centauri (NGC 5139) has drawn attention for its unique features - such as a high stellar mass and a broad distribution of chemical elemen…
A theoretical investigation of far-infrared fine structure lines at and of the origin of the [OIII]88/[CII]158 enhancement
Camilla T. Nyhagen, Alice Schimek, Claudia Cicone +2
[Abridged] The [OIII]/[CII] and [OIII]/[NII] luminosity ratios have shown to be promising tracers of the ionisation state and gas-phase metall…
The GALAH Survey: Stellar parameters and abundances for 800,000 Gaia RVS spectra using GALAH DR4 and The Cannon
Pradosh Barun Das, Daniel B. Zucker, Gayandhi M. De Silva +15
Analysing stellar parameters and abundances from nearly one million Gaia Data Release 3 (DR3) Radial Velocity Spectrometer (RVS) spectra poses challenges due to the limited spectra…
Metallicity-dependent kinematics and orbits in the Milky Way's nuclear stellar disc
F. Nogueras-Lara, N. Nieuwmunster, M. Schultheis +7
The nuclear stellar disc (NSD) is a flat and dense stellar structure at the centre of the Milky Way. Previous work has identified the presence of metal-rich and metal-poor stars in…