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astro-ph.SR2026
Solar chemical composition
A. M. Amarsi, N. Grevesse
The Sun is one of the fundamental benchmarks in astronomy, and there is ever growing interest in precise and accurate determinations of its chemical composition. We present the cur…
astro-ph.SR2026
Ag I model atom and the 3D non-LTE solar silver abundance
Sema Caliskan, Anish M. Amarsi, Per Jönsson +2
Silver is an important light neutron-capture element whose stellar abundances help constrain the origin of the weak r-process. The Sun is an important reference point for such stud…
astro-ph.SR2026
A data-driven estimate of the protosolar helium mass fraction
G. Buldgen, M. Kunitomo, A. Noels +3
The protosolar helium mass-fraction is a key ingredient of solar, planetary models and enrichment laws. However, the assumed values often rely on simplified descriptions of the tra…