Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.112..267l&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 112, no. 2, May 1985, p. 267-272. Research supported by the University of
Astronomy and Astrophysics
Astrophysics
3
Eccentric Orbits, Eclipsing Binary Stars, Stellar Orbits, Astronomical Spectroscopy, Radial Velocity
Scientific paper
V1010 Oph is an unusually complicated close binary. Leung and Wilson (1977) found the system had an overcontact configuration. Subsequently, Margoni et al. (1981) claimed that the system had an eccentric orbit with e = 0.25, based upon their spectroscopic study. A theoretical radial velocity curve (accounting for tidal, reflection, and eclipse effects) based on the photometric parameters (e.g., e = 0) of Leung and Wilson has been computed. The computed curve fits the Asiago and Kitt Peak data very well. It is suggested that the asymmetry in the observed radial velocity arose from tidal, reflection, and eclipse effects rather than from orbital eccentricity. Other arguments against an eccentric orbit for V1010 Oph are also discussed. It is concluded that the eccentricity derived from the spectroscopic study may be spurious.
Leung Ka Chun
Qiao Guo Jun
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