Kinematics of a sample of visual double stars

Autor: Olević D., Cvetković Z., Dačić M.
Jazyk: angličtina
Rok vydání: 2000
Předmět:
Zdroj: Serbian Astronomical Journal, Vol 2000, Iss 162, Pp 101-103 (2000)
Druh dokumentu: article
ISSN: 1450-698X
1820-9289
DOI: 10.2298/SAJ0062101O
Popis: The Hipparcos-Input Catalogue also contains about 8000 already known visual double stars. In the framework of this-project campaign, in addition to other parameters, were also determined the parallaxes π, as well as the polar coordinates ρ and θ for double stars. On the basis of a comparison of these data to those obtained earlier from the ground based measurements (WDS Catalogue) statistical examinations of a double-star sample (1' ≤ ρ ≥ 14') are performed. It is shown that an exceptionally good agreement exists of the statistical distribution Δθ/Δt of the sample as function of ρ(AU) and the curve θ = C(ρ)/ρ2 representing the II Kepler law.
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