The orbit of Delta Equulei in three dimensions

Details The orbit of Delta Equulei in three dimensions The orbit of Delta Equulei in three dimensions

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229.1001h&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, May 1, 1979, p. 1001-1007. Research supported by the National Research Council of Cana

Astronomy and Astrophysics

Astrophysics

14

Binary Stars, Orbits, Radial Velocity, Stellar Motions, Angular Momentum, Astrometry, Three Dimensional Motion, Visual Observation

Scientific paper

Radial velocities of the close visual binary Delta Equulei have been obtained over nearly two cycles from coude plates of reciprocal dispersion 2.4 A/mm. The node near periastron was covered by observations in 1969-1970 and 1975, and the spectra were resolved near apastron in 1966-1967 and 1971-1973, although some blending is always present at the latter phases and is evident in a purely spectroscopic solution. The data have been incorporated into a three-dimensional solution by using a computer program. The visual data were obtained from the U.S. Naval Observatory's files and cover over 17 cycles. The combined solution yields accurate information on the distance of Delta Equulei, the masses of its component stars, and the orientation of its orbital angular-momentum vector.

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