Astrophysics and Space Science

, Volume 112, Issue 2, pp 267–272 | Cite as

The short-period eclipsing binary V1010 Ophiuchi does it have an eccentric orbit?

  • Kam-Ching Leung
  • Gao-Jun Qiao


V1010 Oph is an unusually complicated close binary. Leung and Wilson (1977) found the system had an overcontact configuration. Subsequently, Margoniet al. (1981) claimed that the system had an eccentric orbit withe=0.25 based upon their spectroscopic study. We computed 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. 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.


Reflection Radial Velocity Spectroscopic Study Velocity Curve Eccentric Orbit 
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Copyright information

© D. Reidel Publishing Company 1985

Authors and Affiliations

  • Kam-Ching Leung
    • 1
  • Gao-Jun Qiao
    • 1
  1. 1.Behlen Observatory, Department of Physics and AstronomyUniversity of NebraskaLincolnUSA

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