Results 1 to 10 of about 2,535 (265)
Asteroseismology of the visual binary 70 Ophiuchi [PDF]
Astronomy & Astrophysics, 2006 5 pages, A&A in ...
F. Carrier, P. Eggenberger
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On the component masses of visual binaries
Serbian Astronomical Journal, 2010 In the Sixth Catalog of Orbits of Visual Binary Stars we found those belonging to the Main Sequence to form a sample containing 432 visual binaries. Their total masses were obtained dynamically, i.e. they were calculated using the orbital elements and the new Hipparcos parallaxes.
Z. Cvetković, S. Ninković
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Statistical study of visual binaries [PDF]
Astrophysical Bulletin, 2017 In this paper, some statistical distributions of wide pairs included in Double Star Catalogue are investigated. Frequency distributions and testing hypothesis are derived for some basic parameters of visual binaries. The results reached indicate that, it was found that the magnitude difference is distributed exponentially, which means that the majority
Abdel-Rahman, H. I. +2 more
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Visual Binary Stars: Data to Investigate Formation of Binaries
Open Astronomy, 2016 Abstract Statistics of orbital parameters of binary stars as well as statistics of their physical characteristics bear traces of star formation history. However, statistical investigations of binaries are complicated by incomplete or missing observational data and by a number of observational selection effects.
Kovaleva D. +3 more
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Multiplicity among Visual Binaries [PDF]
International Astronomical Union Colloquium, 1977 AbstractA brief review of the history of multiple-star discovery is followed by a discussion of selection effects, discovery probability, and detection techniques. The incidence of multiplicity and the properties of multiples in various samples of binaries are investigated.
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Herbig Ae/Be Visual Binaries [PDF]
Symposium - International Astronomical Union, 2001 We present the results of a high-angular resolution spectro-imaging survey of a sample of isolated Herbig Ae-Be (HAeBe) stars aimed at searching for close companions. The fraction of wide binaries is found to be significantly higher in HAeBe stars than in solar-mass field dwarfs, and suggests a companion star fraction possibly larger than 1.
Jérôme Bouvier, Patrice Corporon
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Some spectroscopic observations of visual binaries [PDF]
Astrophysics and Space Science, 1965 AbstractThe use of a coudé spectrograph for securing the high-resolution spectrograms necessary to follow the slow variations of radial velocity exhibited by visual binaries is discussed. Recent observations, using the spectrograph at the coudé focus of the Dominion Astrophysical Observatory’s 48-in. reflector, are then presented for the systems ofαUMa,
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Spectrographic Observations of Visual Binaries [PDF]
Transactions of the International Astronomical Union, 1966 At its Liège meeting, in July 1963, the Executive Committee of the Union voted to hold this Joint Discussion as a small homage to the memory of Professor Struve. I do not need to stress why the subject of ‘Close Binaries’ was chosen as we all know that it was closer to Professor Struve’s heart than any of the other ones in which he divided his broad ...
R. M. Petrie, A. H. Batten
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The Astrophysical Journal Supplement Series, 1978 On a determine avec des observations recentes les elements orbitaux et les masses des paires ADS 1709, 2173, 3064, 3483, 3780, 7871, 8419, 10421, 11111, 12447, 12552, 12973, 15378, Φ 347 et Kpr 99.
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