Abstract
view Abstract Citations (13) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Radial-Velocity Observations and Absolute Dimension of Eclipsing Binaries: V781 TAU Lu, Wenxian Abstract High-dispersion spectra have been obtained for the W UMa binary V781 Tau. The spectra were measured for radial velocities by the cross-correlation technique. A spectroscopic orbit has been determined for the first time. The spectroscopic mass ratio q = m1/m2 has been found to be 2.524 +/- 0.046. Photometric solutions were made with the data in the literature and the photometric effects of distortion on the radial-velocity curves were corrected by means of the Wilson-Devinney code. The mass ratio q was corrected to be 2.47 by the code. Absolute dimensions and physical parameters have been derived. The absolute visual magnitudes were found to be 4.44 and 5.23 m. The distance of the system is estimated to be 70 pc. The system is a W-type W UMa system and has a configuration of a fairly large overcontact of 23 percent. Publication: The Astronomical Journal Pub Date: February 1993 DOI: 10.1086/116462 Bibcode: 1993AJ....105..646L Keywords: Eclipsing Binary Stars; Light Curve; Mass Ratios; Orbital Elements; Stellar Orbits; Stellar Spectra; Astronomical Photometry; Cross Correlation; Radial Velocity; Stellar Magnitude; Astrophysics; BINARIES: ECLIPSING full text sources ADS | data products SIMBAD (4)
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