New data on unseen companions of 61 Cygni

Details New data on unseen companions of 61 Cygni New data on unseen companions of 61 Cygni

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sval....4...50d&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 4, Feb. 1978, p. 95-98.) Soviet Astronomy Letters, vol. 4, Jan.-Feb. 1978, p. 50-52. Tr

Astronomy and Astrophysics

Astronomy

3

Companion Stars, Orbital Mechanics, Power Spectra, Spectrum Analysis, Stellar Spectra, Entropy, Orbit Calculation

Scientific paper

The maximum-entropy method of power-spectrum analysis is applied to calculate the orbital periods of the unseen companions of the star 61 Cyg from observations at the Pulkovo and Sproul Observatories. Two periods, of approximately 6 and 12 yr, are identified with confidence. Measurements made at the U.S. Naval Observatory are included in the analysis to yield orbital elements and a mass (four times that of Jupiter) for the companion with the 6-yr period.

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