Results 11 to 20 of about 84,499 (289)
A Cyclic Thermal Instability in Contact Binary Stars [PDF]
Symposium - International Astronomical Union, 1976 Contact binary stars coupled by a common convective envelope in which the entropy is constant, the Lucy model, are unstable against mass exchange: if either component begins to transfer mass, it will continue to do so. A detailed sequence of models is calculated which follows the thermal evolution of a 2M⊙ contact binary of normal Population I ...
Brian P Flannery
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Contact binary stars of the W UMa-type as distance tracers
New Astronomy Reviews, 2004 IAU Sydney 2003, JD13 Extragalactic Binaries, ed.I.Ribas, uses elsart3 ...
Slavek M Rucinski
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Contact tracing of binary stars: Pathways to stellar mergers
Astronomy & AstrophysicsStellar mergers are responsible for a wide variety of phenomena such as rejuvenated blue stragglers, highly magnetised stars, spectacular transients, iconic nebulae, and stars with peculiar surface chemical abundances and rotation rates. Before stars merge, they enter a contact phase.
J. Henneco +2 more
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Masses and angular momenta of contact binary stars [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2006 Abstract Results are presented on component masses and system angular momenta for over 100 low-temperature contact binaries. It is found that the secondary components in close binary systems are very similar in mass. Our observational evidence strongly supports the argument that the evolutionary process goes from near-contact binaries to
Gazeas, K.D., Niarchos, P.G.
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Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]
Journal of Astronomy and Space Sciences, 2005 New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
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Fractal Measures and Nonlinear Dynamics of Overcontact Binaries [PDF]
, 2019 Overcontact binary stars are systems of two stars where the component stars are in contact with each other. This implies that they share a common envelope of gas.
Ambika, G., George, Sandip V., Misra, R.
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Theories of Contact Binary Stars [PDF]
Symposium - International Astronomical Union, 1980 We review and contrast two current theories for the structure of contact binary stars: discontinuity theory and thermal relaxation oscillation theory. We find that the two theories are complementary with the crucial theoretical issue to be resolved being the secular stability of the temperature inversion layer. Critical observational tests remain to be
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From a Dinuclear System to Close Binary Cosmic Objects
Astronomy, 2023 Applying the ideas from microscopic objects to macroscopic stellar and galactic systems, the evolution of compact di-stars and di-galaxies is studied in the mass asymmetry coordinate. The formation of stable binary systems is analyzed.
G. G. Adamian +3 more
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A Catalog of 1022 Bright Contact Binary Stars [PDF]
The Astronomical Journal, 2006 In this work we describe a large new sample of contact binary stars extracted in a uniform manner from sky patrol data taken by the ROTSE-I telescope. Extensive ROTSE-I light curve data is combined with J, H, and K band near-infrared data taken from the Two Micron All-Sky Survey (2MASS) to add color information. Contact binaries candidates are selected
Gettel, S. J. +2 more
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CCD Photometry of Faint Variable Stars in the Globular Cluster NGC 6752 [PDF]
, 1999 We present the results of a photometric survey for variable stars in the field of the nearby globular cluster NGC 6752. The cluster was monitored in 1996 and 1997 for a total of 54 hours with 3 different CCD cameras mounted on the 1.0-m Swope telescope ...
Alcaino G. +12 more
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