2 papers
astro-ph.IM2024
ContEvol formalism: numerical methods based on Hermite spline optimization
Kaili Cao
We present the ContEvol (continuous evolution) formalism, a family of implicit numerical methods which only need to solve linear equations and are almost symplectic. Combining valu…
astro-ph.SR2024
Nature vs. Nurture: Distinguishing Effects from Stellar Processing and Chemical Evolution on Carbon and Nitrogen in Red Giant Stars
John D. Roberts, Marc H. Pinsonneault, Jennifer A. Johnson +16
The surface [C/N] ratios of evolved giants are strongly affected by the first dredge-up (FDU) of nuclear-processed material from stellar cores. C and N also have distinct nucleosyn…