Signatures of Differential Rotation in Solar-type Spectra

Details Signatures of Differential Rotation in Solar-type Spectra Signatures of Differential Rotation in Solar-type Spectra

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.1101b&link_type=abstract

American Astronomical Society, AAS Meeting #212, #11.01; Bulletin of the American Astronomical Society, Vol. 40, p.203

Astronomy and Astrophysics

Astronomy

Scientific paper

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.

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