INFORMATION LIMIT OPTIMIZATION TECHNIQUES APPLIED TO AB DORADUS

UBVRI light curves of the rapidly rotating chromospherically active single star AB Doradus were modeled using circular starspots. Several different methods were employed to calculate corresponding temperatures, resulting in a range of values slightly beyond 1000 K below the photosphere. Grid searches varying the spot latitudes were performed at a range of inclinations in the expectation that an optimum combination of these parameters could be found. However, the best fits, in a χ2 sense, for each inclination tested, were essentially the same. When minimum spot area is included as an additional criterion an inclination of 70 deg appears to be preferred, in reasonable agreement with literature values. A spot evolution sequence is discussed for this data. An analysis of Rucinski's (1982) data is also presented in support of a call for further accurate photometry of this system. © 1990 Kluwer Academic Publishers.