A new orbit for the RS Canum Venaticorum binary Sigma Geminorum

Details A new orbit for the RS Canum Venaticorum binary Sigma Geminorum A new orbit for the RS Canum Venaticorum binary Sigma Geminorum

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..516b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, May 1989, p. 516-519.

Astronomy and Astrophysics

Astronomy

17

Binary Stars, Chromosphere, Stellar Orbits, Radial Velocity, Stellar Spectra, Tables (Data)

Scientific paper

A new precise orbit has been determined for the binary Sigma Gem based on 91 high-resolution Reticon spectra obtained at the Ritter Observatory and the National Solar observatory. The error in the orbital period is smaller than that of the Luyten (1936) values by more than a factor of 10. The low value obtained for the orbital eccentricity indicates that the orbit may be circular. No evidence for period changes is found.

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