Information limit optimization techniques applied to AB Doradus

Details Information limit optimization techniques applied to AB Doradus Information limit optimization techniques applied to AB Doradus

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.167..221b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 167, no. 2, May 1990, p. 221-234.

Astronomy and Astrophysics

Astrophysics

21

Light Curve, Optimization, Starspots, Stellar Rotation, Stellar Temperature, Ubv Spectra, Angular Velocity, Astronomical Photometry, Chromosphere, Stellar Luminosity

Scientific paper

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 chi-squared 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 the data.

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