multiple star

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multiple star

A group of two or more stars, such as Epsilon Lyrae, that are held together by their mutual gravitational attraction. Orbital motions within multiple systems are complex. For instance, systems containing two or more close binaries in orbit about each other appear to be quite common. See also binary star.

Multiple Star

 

a system of three to seven stars in close proximity in space, revolving about a common center of mass under the action of gravitational forces. Systems of eight or more stars are generally the nuclei of star clusters. Multiple stars similar to the trapezium of Orion are systems whose components are more or less equidistant from one another. Such multiple stars may be unstable. In some cases, stars located significantly farther from or closer to the system and only projected on it in the sky are ascribed to the multiple system. The components of multiple stars can themselves be close (spectral, eclipsing, or other type) binary stars. In this case, there may prove to be more than seven stars in the system.

multiple star

[′məl·tə·pəl ′stär]
(astronomy)
A system of three or more stars which appear to the naked eye as a single star.
References in periodicals archive ?
If you have an interest in observing double and multiple stars with binoculars, I recommend the Binocular Double Star and Advanced Binocular Double Star programs offered by the Astronomical League.
This result strengthens the connection between multiple star systems and massive planets," said Roberts.
Observers new to the field will certainly welcome the inclusion of a list of 133 double and multiple star showpieces.
This new work directly supports the conclusion that there are two mechanisms that produce multiple star systems - fragmentation of circumstellar disks, such as we see here, and fragmentation of the larger cloud of gas and dust from which young stars are formed," John Tobin from the University of Oklahoma and Leiden Observatory in the Netherlands, and the lead author of (http://www.
Sweeping northward into Cygnus, we'll find a set of multiple stars bejeweled with colorful suns, all sharing the field of view through my 105-mm refractor at 68x.
My favorite deep-sky targets in the 3-inch glass are double and multiple stars.
More nebulae, both bright and dark; star clusters; double and multiple stars galore; and individual (mostly frosty blue) stars sprinkled burning everywhere.
The smallest aggregations of suns are multiple stars, and
Although I generally use multiple stars as registration points when I stack my deep-sky frames, I could often dispense with this step when stacking images made with the ONAG.
Unlike other deep-sky wonders, multiple stars are easily found and observed on all but the worst of nights, and literally thousands of these gems lie within reach of the smallest telescope.
This is the third installment of my four-part roundup of attractive double and multiple stars (the previous ones were in the February and July issues, and the next will be in spring 2012).
This means that stable multiple stars exist as hierarchies of couples.

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