activity
20232026
most citedObservational constraints on the origin of the elements. VII. NLTE analysis of Y II lines in spectra of cool stars and implications for Y as a Galactic chemical clock

37 citations · 109 across the 14 of their papers we have counts for

collaborators
Showing 2025Show all

4 papers · 1 filter

astro-ph.SR2025

Observational constraints on the origin of the elements. X. Combining NLTE and machine learning for chemical diagnostics of 4 million stars in the 4MIDABLE-HR survey

Nicholas Storm, Maria Bergemann, Tomasz Różański +9

We present the 4MOST-HR resolution Non-Local Thermal Equilibrium (NLTE) Payne artificial neural network (ANN), trained on new FGK spectra with 16 elements computed in NL…

astro-ph.SR2025★ 4 cited

M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars

Philipp Eitner, Maria Bergemann, Richard Hoppe +6

Understanding the origin and evolution of carbon-enhanced metal-poor (CEMP) stars is key to tracing the Galaxy's early chemical enrichment. We investigate how realistic 3D radiatio…

astro-ph.GA2025

Testing stellar yield prescriptions in OMEGA+: Implications for rising sodium abundances in young thick disc stars

Evans K. Owusu, Ashley J. Ruiter, Alex J. Kemp +8

We recently identified an upturn in [Na/Fe] for the population of Solar-type stars in the Galactic young thick disc () at super-Solar metallicity in…

astro-ph.SR2025★ 10 cited

Observational constraints on the origin of the elements. IX. 3D NLTE abundances of metals in the context of Galactic Chemical Evolution Models and 4MOST

Nicholas Storm, Maria Bergemann, Philipp Eitner +8

Historically, various methods have been employed to understand the origin of the elements, including observations of elemental abundances which have been compared to Galactic Chemi…