# Hydrodynamical model atmospheres and 3D spectral synthesis

## TL;DR

This paper explores key issues in 3D hydrodynamical model atmospheres for late-type stars, focusing on spectral line shifts, radiative transfer in metal-poor models, and solar oxygen abundance, using CO5BOLD and Linfor3D tools.

## Contribution

It provides insights into spectral line shifts, radiative transfer, and abundance determinations in 3D stellar atmospheres with detailed model construction and spectral synthesis methods.

## Key findings

- Analysis of spectral line shifts in 3D models
- Radiative transfer effects in metal-poor atmospheres
- Implications for solar oxygen abundance

## Abstract

We discuss three issues in the context of three-dimensional (3D) hydrodynamical model atmospheres for late-type stars, related to spectral line shifts, radiative transfer in metal-poor 3D models, and the solar oxygen abundance. We include a brief overview about the model construction, taking the radiation-hydrodynamics code CO5BOLD (COnservative COde for the COmputation of COmpressible COnvection in a BOx of L Dimensions with L=2,3) and the related spectral synthesis package Linfor3D as examples.