A Theoretical Study of the Stellar Parameters and Surface Nucleosynthesis of the Extremely Metal-Poor RGB Giant BD-18 5550 - Part I: Effects of alpha-enhancement and Internal Mixing

arXiv:2609.09880 · astro-ph.GA, astro-ph.SR · Submitted 2026-09-09 · Read on arXiv

astro-ph.GA, astro-ph.SR

Submitted: 2026-09-09

Updated: 2026-09-09

Comments: Submitted to The Astrophysical Journal. 24 pages, 7 figures, 11 tables. Part I of a two-part series on the stellar parameters and nucleosynthesis of BD$-18^{\circ}$5550; Part II on heavy element abundances is in preparation

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Abundance — 4× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Related papers

• Apparent Stability in Self-Gravitating Turbulence and the Evolution of Molecular Clouds
• Two sets of potential-density basis pairs for the study of radial perturbations in collisionless spherical stellar systems
• Constraining reionization-era Ly alpha escape with JELS-MUSE: a highly complete H alpha-selected sample at z about6.1
• Deriving volume density profiles of filaments from observed surface densities
• Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies