binary star

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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 ?
Iamu will be an "invisible companion to visitors" guiding them through the multi-storey Campus Germany pavilion, which has three labs covering energy, smart cities, and biodiversity, Expo 2020 Dubai said in a statement earlier this month.
In the poem recounting that weekend, "Father Fragments (Or, Yellow Ochre)," the speaker explains, "I did not know him, / but I loved him / like I loved my heartbeat, / that original invisible companion." The poem--which contrasts a visit to the McNay Art Museum with her fathers spare, rented room "hot / like poverty"--itself resembles a work of art, framed by the speaker's retelling, filled as it is with light, color, and iconography; it depicts her four-year-old self sleeping with her father "without a comforter in God's long exposure."
Each visitor's experience will be delivered by an intelligent assistance system called 'IAMU', which will act as an invisible companion to visitors, providing them with information as they move through the pavilion.
Strand makes the suggestion that this invisible companion of 61 Cygni is a planet rather than a star.