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Statistical study of visual binaries
Astrophysics and Space Science, 1988A statistical study of physical pairs from IDS catalogue has been performed. For 2811 binaries with luminosity class V primaries it has been found that their mass function is a Salpeter one; their distribution over semi-major axes of orbits is dN ∝ d log a. The rate of duplicity of stars is close to 1.
Z. Kraicheva +4 more
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On the Maximum Separation of Visual Binaries [PDF]
Journal of Astrophysics and Astronomy, 2012 In this paper, an efficient algorithm is established for computing the maximum (minimum) angular separation ρ max(ρ min), the corresponding apparent position angles ( $\theta|_{\rho_{\rm max}}$ ,
Mohamed I. Nouh, M. A. Sharaf
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Vistas in Astronomy, 1956
Abstract The results of some 130 years of double star discovery and measurement are briefly reviewed. Knowledge of stellar masses is perhaps the most important of these results; this in turn gave rise to dynamical parallaxes. As shown by statistics of the near neighbourhood of the Su, binaries, and even multiple stars, are by no means exceptional ...
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Abstract The results of some 130 years of double star discovery and measurement are briefly reviewed. Knowledge of stellar masses is perhaps the most important of these results; this in turn gave rise to dynamical parallaxes. As shown by statistics of the near neighbourhood of the Su, binaries, and even multiple stars, are by no means exceptional ...
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The visual binary Lambda Ophiuchi
Publications of the Astronomical Society of the Pacific, 1993The orbital elements of this visual binary are revised; we find a=0.91" and P=129 yr. The mass ratio measured from a 75-yr series of astrometric plates supports the spectroscopically suspected presence of a third body.
W. D. Heintz, C. Strom
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Visual Binaries in Planetary Nebulae
Publications of the Astronomical Society of the Pacific, 1973Close companions to the central stars have been observed in several planetary nebulae. Proper motions for some of these are consistent with physical association.
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Publications of the Astronomical Society of the Pacific, 1981
The orbit of the long-period pair is rediscussed and no evidence found for the suspected unseen companion.
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The orbit of the long-period pair is rediscussed and no evidence found for the suspected unseen companion.
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The Orbit of a Visual Binary (L)
1969Our material is a reproduction of visual observations obtained by a number of observers in the 19th and 20th century. The brightest component F is always taken as the origin; for the fainter component B the observer has measured the distance to F and the direction of FB. We only consider the relative orbit.
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The Orbit of a Visual Binary (L)
1987Our material is a reproduction of visual observations obtained by a number of observers in the 19th and 20th century. The brightest component F is always taken as the origin; for the fainter component B the observer has measured the distance to F and the direction of FB. We only consider the relative orbit.
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Enriching reverse engineering through visual exploration of Android binaries
PPREW@ACSAC, 2015Ashutosh Jain +2 more
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Orbit of a Visual Binary System
2004A new method to solve the problem of initial orbit determination of any visual binary system is presented. The apparent orbit, which is the projection of the true orbit on the plane of sky, is expressed in a closed form as a function of the keplerian orbital elements by a suited choice of two angular parameters instead of inclination and argument of ...
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