Signatures of Differential Rotation in Solar-type Spectra
Abstract
Bruning (BAAS 38, 915, 2007) reported on the effects of surface convection on the Fourier signal of differential rotation in the solar spectrum. The Fourier signal of medium-strength lines is not well matched unless the effects of surface convection are included. This paper extends the analysis to a range of parameters such as v sin i, limb darkening, amount of differential rotation, and convective shifts. This grid of models should help establish for observers whether differential rotation is discernible in late-type stellar spectra.
This work was supported in part by the Wisconsin Space Grant Consortium.- Publication:
-
American Astronomical Society Meeting Abstracts #212
- Pub Date:
- May 2008
- Bibcode:
- 2008AAS...212.1101B