Results 21 to 30 of about 8,045 (245)
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 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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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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Binary Stars in Upper Scorpius [PDF]
The Astronomical Journal, 2019 Abstract To address the statistics of binary stars in the 8 Myr old Upper Scorpius (USco) star formation region, we conducted a speckle interferometric survey of 614 association members more massive than 0.4 (spectral types earlier than M3V) based on the list of Luhman et
Andrei Tokovinin, Cesar Briceño
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ELECTRONIC TEXTBOOK FOR AMATEUR ASTRONOMERS AND STUDENTS "Binary stars and their evolution"
Odessa Astronomical Publications, 2017 Electronic textbook for members and supervisors of the Youth Academy of Sciences; schoolars and teachers; students of the first courses. Total volume of the printed version is 86pp. The textbook is devoted to 100-th Anniversary of Prof.
L. L. Chinarova
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The Astronomical Journal, 2023 We present a method to identify likely visual binaries in Gaia eDR3 that does not rely on parallax or proper motion. This method utilizes the various point-spread function sizes of Two Micron All Sky Survey (2MASS)/Gaia, where at
Ilija Medan, Sébastien Lépine
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Gravity darkening in binary stars [PDF]
Astronomy & Astrophysics, 2012 Context.Interpretation of light curves of many types of binary stars requires the inclusion of the (cor)relation between surface brightness and local effective gravity. Until recently, this correlation has always been modeled by a power law relating the flux or the effective temperature and the effective gravity, namely T_eff g_eff^ . Aims. We look
Michel Rieutord +3 more
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Characterization of Low-mass Companions to Kepler Objects of Interest Observed with APOGEE-N
The Astrophysical Journal Supplement Series, 2023 We report the characterization of 28 low-mass (0.02 M _⊙ ≤ M _2 ≤ 0.25 M _⊙ ) companions to Kepler objects of interest (KOIs), eight of which were previously designated confirmed planets.
Caleb I. Cañas +14 more
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International Astronomical Union Colloquium, 1983 Abstract:Ultraviolet and X-ray surveys of the W Ursae Majoris type stars are reviewed. These systems exhibit extended coronas and transition regions that are confined close to the optically determined surfaces. Correlations of X-ray activity with period or rotational velocity indicate a turn-over or saturation of emission at the short periods or high ...
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Stellar Properties of Observed Stars Stripped in Binaries in the Magellanic Clouds
The Astrophysical Journal, 2023 Massive stars (∼8–25 M _⊙ ) stripped of their hydrogen-rich envelopes via binary interaction are thought to be the main progenitors for merging neutron stars and stripped-envelope supernovae.
Y. Götberg +8 more
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