activity
20152026
most citedThe chemical make-up of the Sun: A 2020 vision

726 citations · 4.2k across the 76 of their papers we have counts for

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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.SR2025★ 4 cited

The solar sulphur abundance in view of large-scale atomic structure calculations and 3D non-LTE models

A. M. Amarsi, W. Li, N. Grevesse +1

The solar chemical composition is a fundamental yardstick in astrophysics and the topic of heated debate in recent literature. We re-evaluate the abundance of sulphur in the photos…

astro-ph.SR2025★ 6 cited

The peculiar composition of the Sun is not related to giant planets

M. Carlos, A. M. Amarsi, P. E. Nissen +1

Highly-differential spectroscopic studies have revealed that the Sun is deficient in refractory elements relative to solar twins. To investigate the role of giant planets on this s…

astro-ph.SR2025★ 5 cited

Influence of the magnetic activity cycle on mean density and acoustic radius inversions

Jérôme Bétrisey, Daniel R. Reese, Sylvain N. Breton +4

Asteroseismic modelling is crucial for upcoming missions like PLATO, CubeSpec, and Roman. Despite significant progress, discrepancies between observations and theoretical predictio…

astro-ph.SR2025★ 12 cited

Revisiting inelastic Cu+H collisions and the non-LTE Galactic evolution of copper

S. Caliskan, A. M. Amarsi, M. Racca +4

The Galactic evolution of copper remains poorly understood, partly due to the strong departures from local thermodynamic equilibrium (LTE) affecting Cu I lines. A key source of unc…