Light-Curve and Period Changes in the W UMa-Type System TY Bootis
نویسندگان
چکیده
منابع مشابه
Analysis of a photoelectric light curve of the W UMa - type binary ST Ind
Modelling of Walter and Duerbeck’s photoelectric observations of ST Ind is performed. The Wilson-Devinney model along with a Monte Carlo method as the search procedure, was used to derive the physical parameters of this contact system. One dark spot on the surface of the primary component was introduced to explain the observed difference in the heights of the maxima.
متن کاملGENETIC-ALGORITHM-BASED LIGHT CURVE OPTIMIZATION APPLIED TO OBSERVATIONS OF THE W UMa STAR BH CAS
I have developed a procedure utilizing a Genetic-Algorithm-based optimization scheme to fit the observed light curves of an eclipsing binary star with a model produced by the Wilson-Devinney code. The principal advantages of this approach are the global search capability and the objectivity of the final result. Although this method can be more efficient than some other comparably global search ...
متن کاملLight Curves of the W UMa - type Systems in Baade ’ s Window
Light curves of the contact systems visible in the direction of Baade’s Window have been analyzed using the first coefficients of the Fourier representation. The results confirm that the geometric contact between components is usually weak. Systems showing significant differences in the depths of eclipses are very rare in the volume-limited sample to 3 kpc: only 2 among 98 contact systems show ...
متن کاملRadio Survey of W UMa-type Systems
12 W UMa-type systems were observed at 3.6 cm with a goal to compare their radio luminosities with those of non-contact, rapidly rotating, late-type stars. Only 3 systems, all of spectral type K, have been detected. The detections and (low) upper limits for remaining systems con rm the strong under-luminosity of W UMa-type systems. VW Cep, which was been detected several times before, has been ...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of Japan
سال: 2005
ISSN: 0004-6264,2053-051X
DOI: 10.1093/pasj/57.1.187