Observations and analysis of CF TUC

Details Observations and analysis of CF TUC Observations and analysis of CF TUC

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.133...45b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 133, no. 1, May 1987, p. 45-58.

Statistics

Computation

15

Eclipsing Binary Stars, Stellar Spectrophotometry, Ubv Spectra, Computational Astrophysics, H Lines, K Lines, Light Curve, Stellar Coronas, Tables (Data), X Rays

Scientific paper

Recent UBV photometry of the RS CVn binary CF Tuc is discussed and analysed. Combining the results with previously published spectroscopy the authors find radii of 1.63 R_sun; for the hotter (≡6000K) and 3.11 R_sun; for the cooler (≡4500K) component; both stars having a mass of about 1.3 M_sun;. The distance to the system is put at 86±15 pc. Though the photometric data is incomplete in the coverage of some regions out of the minima, there is no significant evidence of the "wave-type distortions" - a known hallmark of RS CVn stars - and the data can be modeled by a standard eclipsing binary system in which the statistical test of goodness-of-fit (χ2) produces quite acceptable values for reasonable estimates of observational accuracy (⪉0.01 mag).

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