Different convection models in ATLAS

Smalley, Barry

Abstract

Convection is an important phenomenon in the atmospheres of A-type and cooler stars. A description of convection in ATLAS models is presented, together with details of how it is specified in model calculations. The effects of changing the treatment of convection on model structures and how this affects observable quantities are discussed. The role of microturbulence is examined, and its link to velocity fields within the atmosphere. Far from being free parameters, mixing-length and microturbulence should be constrained in model calculations.

Citation

Smalley, B. Different convection models in ATLAS. Manuscript submitted for publication

• Journal Article Type: Article
• Publicly Available Date: May 26, 2023
• Pages: 1 - ?
• Keywords: Astrophysics