double star

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Related to Double stars: Binary stars

double star

double star

n
(Celestial Objects) two stars, appearing close together when viewed through a telescope; either physically associated (binary star) or not associated (optical double star). See also binary star, optical double star

dou′ble star′


n.
two stars that appear together in the sky and appear as one to the eye or through a low-power telescope.
[1775–85]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.double 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 ?
For example, NASA's Kepler space observatory has found several planetary systems orbiting double stars.
Nine bright southern double stars were measured and compared with observations made by Bob Argyle (from Cambridge University) using the 26" refractor in Johannesburg and the values listed in the Washington Double Star Catalog (WDS).
Dubai Astronomy Group's event, he said, will also provide visitors an opportunity to look through the club telescopes at other celestial objects including Saturn, Mars, double stars, globular clusters, nebula and other deep sky objects, in addition to moonrise just before sunrise, in close conjunction with the planet Venus.
Visual double stars are among the easiest of all astronomical objects to observe.
The new study shows that to properly interpret the Universe, this simplification cannot be made: these heavyweight double stars are not just common, their lives are fundamentally different from those of single stars.
The International Occultation Timing Association (IOTA) undertakes a worldwide programme of video-recording lunar occultations of known and suspected double stars, to ascertain their duplicity, position angle, separation and difference in magnitude.
Although there have been past hints of the existence of other planets around double stars, this is the first confirmation.
It is the first time scientists have confirmed the existence of a planet circling double stars.
The new star joins the company's existing Christmas portfolio which includes White on White Double Stars and Chocolate Holly Leaves with attractive red chocolate berries.
Herschel was also an accomplished telescope builder, and spent much of his time observing the sky looking for double stars and nebulae.
Topics addressed by the papers include planetary masses and orbital parameters from radial velocity measurements, terrestrial planets in extrasolar planetary systems, mission requirements in the search for extrasolar planets, possible detection of biomarkers indicating the presence of life on extrasolar planets, the formation of resonant planetary systems, impact of stellar activity on the evolution of planetary atmospheres and habitability, dynamics of the extrasolar planetary, planets in double stars, the transit method of extrasolar planet detection and analysis, US programs and space missions for extrasolar planet research, and habitable zones in extrasolar planetary systems.
144 double stars are listed and mapped in order to provide useful tagets for those nights when deep-sky observation is less than optimum.