Results 21 to 30 of about 180,159 (259)
The Evolution of Contact Binaries [PDF]
Symposium - International Astronomical Union, 1976 Asymmetric light curves and period changes of contact binaries can be explained by large-scale prominence activity. From the mass outflow accompanying this activity the mean lifetime of a contact binary is estimated as 5 × 107 yr. From the lifetimes of contact binaries and normal solar type dwarfs on the one hand and the proportion of the former among ...
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The detached-binary channel for the formation of contact binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 The detached-binary channel is an important channel for the formation of contact binaries, according to which a detached binary might evolve into contact by evolutionary expansion of the components, or angular momentum loss through the effect of magnetic braking (MB).
Jiang, Dengkai, Han, Zhanwen, Li, Lifang
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Period Change of the Contact Binary AH Tauri [PDF]
Journal of Astronomy and Space Sciences, 2004 New BVRI photometric observations of the contact binary AH Tau were performed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Optical Astronomy Observatory during seven nights from September to December, 2001. A total of 144 times of minima
Dongjoo Lee +5 more
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The structure of contact binaries [PDF]
Astronomy & Astrophysics, 2004 17 pages, 28 figures, accepted by A& ...
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The Plutino Population: An Abundance of Contact Binaries [PDF]
The Astronomical Journal, 2018 Abstract We observed 12 Plutinos over two separated years with the 4.3 m Lowell’s Discovery Channel Telescope. Here, we present the first light-curve data for those objects. Three of them (2014 JL80, 2014 JO80, and 2014 JQ80) display a large light-curve amplitude explainable by a single elongated object, but they are most likely caused ...
Audrey Thirouin, Scott S. Sheppard
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Contact Binaries of Spectral Type O [PDF]
Symposium - International Astronomical Union, 1979 The eclipsing binaries UW CMa, AO Cas, and V729 Cyg have been systems of great interest for over fifty years. The light curves are complex and suffer significant changes on a time scale of months, but the primary attraction of these systems is that both components have O-type spectra; thus they present us with some of the few possibilities for direct ...
Kam-Ching Leung, Donald P. Schneider
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OBSERVED PROPERTIES OF CONTACT BINARY SYSTEMS
Odessa Astronomical Publications, 2017 A group of close eclipsing systems, which continues to pose a challenge in many subjects of modern astrophysics, is that of contact binaries. In this study, using the most recent observational data of a large sample of such systems, a review concerning ...
A. Kalimeris, H. Rovithis-Livaniou
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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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Light Curves and Roche Configurations of Near-Contact Binary AX Draconis [PDF]
Journal of Astronomy and Space Sciences, 2003 We completed the light curves of near-contact binary system AX Dra for 11 nights from March 2001 to May using the 61-cm reflector and VR filters at Sobaeksan Optical Astronomy Observatory.
Ho-Il Kim +4 more
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Frontiers in Physics, 2021 This paper aims to study the shear behavior of binary particles with irregular shapes by discrete element method simulations of the biaxial test in the membrane boundary condition.
Kai Wu +4 more
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