Results 211 to 220 of about 736 (237)
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Evidence for mass loss in visual binary stars
Astrophysics and Space Science, 1988The present status of the observational evidence about mass loss in visual binary and multiple systems is reviewed. Particular emphasis is placed on the importance of mass-loss rates measures in these stars, as a systematic study would provide useful constraints in two fields. First, as mass-outflows processes are not modified by the interaction of the
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Star formation history: Modeling of visual binaries
New Astronomy, 2018Abstract Most stars form in binary or multiple systems. Their evolution is defined by masses of components, orbital separation and eccentricity. In order to understand star formation and evolutionary processes, it is vital to find distributions of physical parameters of binaries.
Y.M. Gebrehiwot +5 more
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Visual binary star orbits in universal variables
Astrophysics and Space Science, 1995zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Viñuales, E., Cid, R., Elipe, A.
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Orbits of Ten Visual Binary Stars
Chinese Journal of Astronomy and Astrophysics, 2007We present the orbits of ten visual binary stars: WDS 01015+6922, WDS 01424–0645, WDS 01461+6349, WDS 04374–0951, WDS 04478+5318, WDS 05255–0033, WDS 05491+6248, WDS 06404+4058, WDS 07479–1212, and WDS 18384+0850. We have also determined their masses, dynamical parallaxes and ephemerides.
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Orbit of the visual binary star 61 Cyg
Astronomische NachrichtenAbstractWe present the orbit and the mass estimates for the components of the visual binary star 61 Cyg obtained with the positional observations, including the high‐precision Gaia data, and the measurements of differences in the radial velocities and the radial accelerations of the components.
I. S. Izmailov, A. A. Apetyan
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The Orbital Elements of a Visual Binary Star
2006Although astronomers regard the brighter component as fixed and map the motion of the fainter one around it, in reality, both stars in a binary system move in ellipses around the common centre of gravity. The size of the ellipse is inversely proportional to the mass of the star, so in the Sirius system, for instance, the primary has a mass of 2.1 sun ...
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Visual binaries among the barium stars. II - HD 105902
Publications of the Astronomical Society of the Pacific, 1977Photometric and spectroscopic observations are presented of both members of the binary star system HD 105902 (ADS 8448) whose primary component is a barium star of spectral class K5 Ba 2. The visual absolute magnitude for the barium star primary is found to be +2.7 and the distance to the system is 190 pc.
R. B. Culver, O. G. Franz, P. A. Ianna
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Evaluation of Binary Star Formation Models Using Well-Observed Visual Binaries
2019Creation of the Galaxy model describing formation and evolution of binary stars requires generating and testing hypotheses related to the process of formation of binary stars and distributions of their characteristics. A set of hypotheses can be generated on the basis of a number of publications that suggested the formation of binary systems.
Oleg Malkov +8 more
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Improved orbit for the visual-binary star 40/41 Dra
Astrophysics, 2012Families of orbits of the visual binary star 40/41 Dra (ADS 11061), a near-polar visual binary star (αJ2000 =18h00m; δJ2000; δJ2000 = +80°00′ ) which is a wide pair in the neighborhood of the sun ( πt = 19mas ), are calculated. Both components are spectrally binary and belong to the late spectral classes K2V and F7.
A. A. Afanasyeva, E. A. Grosheva
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Visual binary stars with known orbits in Gaia EDR3
Monthly Notices of the Royal Astronomical Society, 2022Dmitry Chulkov, Oleg Malkov
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