Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993astl...19...77s&link_type=abstract
Astronomy Letters, Vol. 19, p. 77-80; Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 19, no. 3, p. 193-201. In Russia
Astronomy and Astrophysics
Astronomy
3
Binary Stars, Radial Velocity, Stellar Orbits, Stellar Spectrophotometry, Visible Spectrum, Angular Correlation, Stellar Spectra
Scientific paper
Observations on a correlation radial spectrometer of 31 visual binary systems with components of late-type spectral classes are reported. The observations were made in order to resolve the 180-deg ambiguity of the longitude of the ascending node. For 11 systems with angular separations greater than 1.5 arcsec, the components' velocities were measured separately. For 12 systems with angular separations in the range 0.2-1.5 arcsec, the sign of radial velocity was obtained with the differential observation method. Additional spectroscopic components were detected in three systems. On the basis of the observations, the true ascending node of the orbit was determined for 16 systems. The velocities of the other five systems were measured without resolution into components.
Smekhov M. G.
Tokovinin Andrei
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