Titlebook: Astrometric Binaries; An International Con Zdeněk Kopal,Jürgen Rahe Book 1985 D. Reidel Publishing Company, Dordrecht, Holland 1985 astrome

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https://doi.org/10.1007/978-3-658-31489-7n’s working definition of a true binary should be extended if it were to include all true binaries, (d) The doubles are probably stars of Population I. (e) The logarithm to the base 10 of the cumulative counts can be represented by an empirical relation A + B(△. - 1.5) + C(△. - 1.5)..

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Astrometric Binaries and Their Role in Double Star Astronomylass of visual binaries, as illustrated by systems where the perturbing unseen component has been rendered visible by more powerful instruments, as in the case of Sirius B, predicted by Bessel, Procyon B, and Ross 614.

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Prefacee International Astronomical Union. The first meeting was organized in 1959 and dealt with Variable Stars, the last one was held in 1981 and focussed on ‘Binary and Multiple Stars as Tracers of Stellar Evolution’.

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