binary star

(redirected from Close binary)
Also found in: Thesaurus, Encyclopedia.
Related to Close binary: eclipsing binary, Binary star system

binary star

n.
A system of two stars bound together by gravity and orbiting a common center of mass, most often appearing as a single star when visible to the unaided eye. Also called double star.

binary star

n
(Astronomy) a double star system comprising two stars orbiting around their common centre of mass. A visual binary can be seen through a telescope. A spectroscopic binary can only be observed by the spectroscopic Doppler shift as each star moves towards or away from the earth. Sometimes shortened to: binary See also optical double star, eclipsing binary

bi′nary star′


n.
a system of two stars that revolve about their common center of mass.
[1875–80]

binary star

A system of two stars that orbit a common center of mass. The pair often appears as a single star to the unaided eye.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.binary star - a system of two stars that revolve around each other under their mutual gravitation
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
References in periodicals archive ?
They had witnessed a classical nova--the outburst of a white dwarf in a close binary system that has collected too much hydrogen from its companion star.
In our galaxy, no such slow X-ray pulsars are observed in hundred and fifty known globular clusters, because their cores are not big and dense enough to form close binary stars at sufficiently high rate," Ivan Zolotukhin of LSMU said in (https://www.
Researchers model the observable properties of rapidly rotating stars, the gravitational effects of a low-mass binary companion on the growth of a disk in a close binary system, velocity and momentum in large circumstellar disks, and the complete lightcurve of the ?
The ground-based observations suggested two possible scenarios for the three-body system: a Saturn-mass planet orbiting a close binary star pair or a Saturn-mass and an Earth-mass planet orbiting a single star," explained David Bennett of the NASA Goddard Space Flight Center in Greenbelt, Maryland, the paper's first author.
Saida Caballero-Nieves, a co-author of the study, explains, "There have been suggestions that these monsters result from the merger of less extreme stars in close binary systems.
The first hypothesis is that the magnetic field is generated while the star is being formed; the second is that the magnetic field originates in dynamos driven by the violent mixing of stellar plasma when the two stars in a close binary merge.
TZOs are thought to be formed by the interaction of two massive stars-a red supergiant and a neutron star formed during a supernova explosion-in a close binary system.
Among the topics are gravitational wave foreground radiation from neutron star-dwarf binaries, the chromospheric activity of late-type stars of the different rotational periods, spectrophotometry and model atmosphere flux fitting, the light-time effect and tertiary companions in close binary stars, the age of the local interstellar bubble, and the current status and outreach activities of radio astronomy in Malaysia.
A contact binary is a close binary star in which both components fill their Roche lobes.
This is a close binary star, with two equal components currently separated by 1.
Synthesizing of radial velocity curves of close binary systems.
Also highlighted are hydrogen-deficient stars in close binary systems, and massive Wolf-Rayet stars and their relation to Type I supernovae and Gamma-ray bursts.