variable star

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Related to Variable-star: binary star, neutron star, Cepheid variable star

variable star

n.
A star whose brightness varies because of internal changes, periodic eclipsing by a mutually orbiting star, or periodic transiting of orbiting planets or other circumstellar material.

variable star

n
(Celestial Objects) any star that varies considerably in brightness, either irregularly or in regular periods. Intrinsic variables, in which the variation is a result of internal changes, include novae, supernovae, and pulsating stars. See also eclipsing binary

var′iable star′



n.
a star that varies in brightness often in a regular period.
[1780–90]

variable star

A star whose brightness changes periodically. The variation can occur because of internal changes in a single star or because a darker star periodically eclipses a brighter star in a binary star system.

variable star

A star that varies in brightness because of internal changes or because it is periodically eclipsed by other bodies.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.variable star - a star that varies noticeably in brightnessvariable star - a star that varies noticeably in brightness
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
References in periodicals archive ?
When she wrote these words, Margaret Harwood was midway through her 40-year career as director of Maria Mitchell Observatory, much of it tutoring young women in variable-star work.
In those days I often made more than 30 variable-star magnitude estimates per hour, a pace that was perhaps a little too fast for me to appreciate anything unusual.
Astronomers have discovered new kids on the variable-star block, living in a neighborhood that they thought such stars wouldn't inhabit.
In 1911 William Tyler Olcott founded the American Association of Variable Star Observers (AAVSO) to systematically archive these variable-star observations, data that scientists could--and still do--use for research.
The News Note "Past Meets Future at AAVSO's Centennial" (S&T: January 2012, page 20) gives the impression that visual observing no longer has a place in variable-star astronomy.
Funded by the National Science Foundation, the project was designed for those new to variable-star science and amateur astronomy.

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