Imaging and Modeling Rapid Rotators: α Cep and α Oph
Abstract
We present sub-milliarcseond resolution observations of two nearby rapid rotators α Cephei and α Ophiuchi, obtained with the CHARA array. We reconstruct an aperture synthesis image for α Cep. We also construct gravity darkening models for both stars and precisely determine their geometry, polar and equatorial radii and temperatures, as well as their fractional rotation speed.
- Publication:
-
Revista Mexicana de Astronomia y Astrofisica Conference Series
- Pub Date:
- February 2010
- Bibcode:
- 2010RMxAC..38..117Z
- Keywords:
-
- stars: fundamental parameters;
- stars: individual ( α Cep;
- α Oph);
- techniques: interferometric