Visualization and spectral synthesis of rotationally distorted stars

Abstract

Simple spherical, non-rotating stellar models are inadequate when describing real stars in the limit of very fast rotation: Both the observable spectrum and the geometrical shape of the star deviate strongly from simple models. We attempt to approach the problem of modeling geometrically distorted, rapidly rotating stars from a new angle: By constructing distorted geometrical models and integrating standard stellar models with varying temperature, gravity, and abundances, over the entire surface, we attempt a semi-empirical approach to modeling. Here we present our methodology, and present simple examples of applications.

7 pages, 5 figures. Contribution to GREAT-ESF Workshop on "Stellar Atmospheres in the Gaia Era", Brussels 23-24 June 2011

References in corpus (4)

• Imaging the Surface of Altair
• Resolving the Effects of Rotation in Altair with Long-Baseline Interferometry
• On the Structure and Properties of Differentially Rotating Main-Sequence Stars in the 1-2 M_sun Range
• First measurement of the magnetic field on FK Com and its relation to the contemporaneous starspot locations

Cited by in corpus (1)

• Matching the Spectral Energy Distribution and p Mode Oscillation Frequencies of the Rapidly Rotating Delta Scuti Star ? Ophiuchi with a 2D Rotating Stellar Model