Results 21 to 30 of about 210,765 (341)
Spectroscopic Orbits of Subsystems in Multiple Stars. IX
The Astronomical Journal, 2023 New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
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The Astronomical Journal, 2023 We present orbital elements for 22 single-line binaries, nine of them studied for the first time, determined from a joint spectroscopic and astrometric solution.
Jennifer Anguita-Aguero +6 more
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Carbon-enhanced metal-poor stars: a window on AGB nucleosynthesis and binary evolution. II. Statistical analysis of a sample of 67 CEMP-$s$ stars [PDF]
, 2015 Many observed CEMP stars are found in binary systems and show enhanced abundances of $s$-elements. The origin of the chemical abundances of these CEMP-$s$ stars is believed to be accretion in the past of enriched material from a primary star in the AGB ...
Abate, C. +3 more
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A Search for Exoplanets in Short-Period Binary Star Systems [PDF]
Journal of Astronomy and Space Sciences, 2012 This paper reports the progress of a search for exoplanets with S-type orbits in short-period binary star systems. The selected targets have stellar orbital periods of just a few days. These systems are eclipsing binaries so that exoplanet transits, if
Ronald Kaitchuck +2 more
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The Formation of Binary Stars [PDF]
Symposium - International Astronomical Union, 1981 The speed and storage capacity of present-day computers have stimulated the development of numerical techniques allowing the investigation of three-dimensional gas dynamical problems of astronomical interest. Of the problems that can be attacked with these techniques, that of the formation of binaries has historically attracted the greatest interest ...
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Hypervelocity binary stars: smoking gun of massive binary black holes
, 2007 The hypervelocity stars recently found in the Galactic halo are expelled from the Galactic center through interactions between binary stars and the central massive black hole or between single stars and a hypothetical massive binary black hole.
D. N. C. Lin +4 more
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On the Detection of Binary Be Stars [PDF]
Symposium - International Astronomical Union, 1976 Possible methods for detecting the presence of a cool companion to a Be star are discussed. Photometric observations are shown to be incapable of detecting companions in all but the most extreme cases. Spectroscopic investigation is also unlikely to yield many new discoveries.
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The Rotational Evolution of Young, Binary M Dwarfs [PDF]
, 2018 We have analysed K2 light curves for more than 3,000 low mass stars in the $\sim$8 Myr old Upper Sco association, the $\sim$125 Myr age Pleiades open cluster and the $\sim$700 Myr old Hyades and Praesepe open clusters to determine stellar rotation rates.
Barrado, David +7 more
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The evolution of wide binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the orbital evolution of wide binary stars in the solar neighborhood due to gravitational perturbations from passing stars. We include the effects of the Galactic tidal field and continue to follow the stars after they become unbound. For a wide variety of initial semi-major axes and formation times, we find that the number density (stars per ...
Yan-Fei Jiang, Scott Tremaine
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An electrically powered binary star? [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 accepted by ...
Mark Cropper +4 more
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