Group Title: analysis of light variations of RS Canum Venaticorum binary systems
Title: An Analysis of light variations of RS Canum Venaticorum binary systems
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 Material Information
Title: An Analysis of light variations of RS Canum Venaticorum binary systems
Alternate Title: RS Canum Venaticorum binary systems
Physical Description: xii, 323 leaves : ill. ; 28 cm.
Language: English
Creator: Caton, Daniel Bruce, 1951- ( Dissertant )
Oliver, John P. ( Thesis advisor )
Wilson, Robert E. ( Reviewer )
Smith, Haywood C. ( Reviewer )
Gottesman, Stephen T. ( Reviewer )
Smith, Douglas L. ( Reviewer )
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1981
Copyright Date: 1981
Subjects / Keywords: Double stars   ( lcsh )
Astronomy thesis Ph. D   ( lcsh )
Stars -- Spectra   ( lcsh )
Dissertations, Academic -- Astronomy -- UF   ( lcsh )
Genre: bibliography   ( marcgt )
non-fiction   ( marcgt )
theses   ( marcgt )
Abstract: Photoelectric data for fourteen RS Canum Venaticorum binary systems were obtained by the author from 1978 through 1981, at Rosemary Hill Observatory. These data are presented in the form of light curves and tabulated magnitudes and heliocentric Julian Dates. The outside-of—eel ipse points for eight systems were Fourier analyzed for measurement of any distortion wave in the light curve. The wave in RS Canum Venaticorum itself was found to have moved half a phase unit in only two years. A wave was discovered in the light curve of RZ Eridani, and was found to have changed in a manner consistent with the starspot model for RS CVn systems. The light curve for UX Comae Bernices was found to have a large amount of intrinsic scatter, and the system was found to be anomalously bright on one night. These characteristics suggest that some type of flare activity may be present in that system. The other five systems analyzed were -found to have waves consistent with other published results, or to have no definite wave at all. The possibility o-f detecting spots and deriving spot sizes -from secondary eclipse observations was also explored. For this purpose the Wilson—Devi nney computer program for light curve synthesis was modified to allow spots on the secondary star. Comparison of computer synthesized secondary eclipses of spotted stars to actual observations showed that there is little chance of detecting fluctuations due to individual spots. It was found that there is even less chance for discriminating between a few large spots and a large number of smaller spots. However, the program did produce good fits to RS CVn light curves, using reasonable spot parameters.
Statement of Responsibility: by Daniel Bruce Caton
Thesis: Thesis (Ph. D.)--University of Florida, 1981
Bibliography: Bibliography: leaves 73-75.
General Note: Typescript.
General Note: Vita.
 Record Information
Bibliographic ID: UF00099509
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: alephbibnum - 000295500
oclc - 07906064
notis - ABS1846


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