contact binary

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contact binary

See binary star; equipotential surfaces.

contact binary

[′kän‚takt ′bī‚ner·ē]
(astronomy)
A binary system at least one of whose components fills its Roche lobe and in which mass exchange is taking place.
References in periodicals archive ?
Among the topics are circum-binary components of contact binaries, extremely short-period contact binaries, the first spectroscopic solutions of two southern eclipsing binaries: HO Tel and QY Tel, effective temperatures of selected main-sequence stars with the most accurate parameters, heating of the upper atmosphere of a hot Jupiter for various spectral energy distributions of the host star, and plants and brown dwarfs orbiting evolved binaries.
Co-author Dr Markus Lohr, from the Open University, told BBC News that these contact binaries were stars that orbit so closely they share an outer atmosphere.
This is the third in a series of reports of observations of anipodean W Uma contact binaries.
1 & 2 wherein a comprehensive summary of W UMa contact binaries is presented.
The documentation has suggestions for using the program to illustrate the properties of eclipsing binaries and various exotic systems such as contact binaries, and interpreting their light and radial-velocity curves.
The computer simulation began with the assumption that all asteroids big enough to make craters more than 20 kilometers across were contact binaries.
This is the second in a series of reports of observations of antipodean W Uma contact binaries.
I refer the reader to MNASSA Volume 71 Nos 2 & 3 wherein a comprehensive summary of W UMa contact binaries is presented.
We now know that cataclysmic variables - stars that rapidly and temporarily explode into far greater brilliance - are contact binaries in which one member is overflowing its Roche lobe.
This is the first in a series of reports of observations on anipodean W Uma contact binaries.
This is the fourth in a series of reports of observations of antipodean W Uma contact binaries observed from the northern outskirts of Johannesburg, S.