Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apjs...55..571d&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 55, Aug. 1984, p. 571-584. Research supported by the University G
Astronomy and Astrophysics
Astrophysics
54
Eclipsing Binary Stars, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Absorption Spectra, Astrometry, Astronomical Catalogs, Interstellar Extinction, Stellar Color, Stellar Mass
Scientific paper
In the present consideration of O'Connell's (1951) study of the light curve asymmetry between outside eclipse maxima, using UBV photoelectric data, parametric and nonparametric methods indicate significant correlations in at least one color between the size of the asymmetry, on the one hand, and several additional parameters. These include: the color index of the asymmetry, the relative sizes of the hotter and smaller components, and their distortion, the relative separation of the stars, and the logarithm of the period. The present study data are characterized by lower mean amplitudes and a much more even distribution of the asymmetry, with respect to sign, than that of O'Connell, and there is a tendency for the brighter maximum to be redder, contrary to O'Connell's results. More than one mechanism for the O'Connell effect is suggested.
Davidge Tim J.
Milone Eugene F.
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