multiple star
Học thuậtThân thiện
Definition
Noun: A multiple star is a gravitationally bound system consisting of three or more stars that orbit a common center of mass. It is a specific type of star system, more complex than a binary star system which contains only two stars.
Usage
The term is used in astronomy to describe a specific stellar configuration. It functions as a countable noun. * Astronomers discovered a multiple star system with four components. * The study focused on the orbital dynamics within the multiple star.
Examples
Advanced Usage
- "Hierarchical multiple star": A common configuration where stars orbit in pairs (binaries), and those pairs orbit each other, forming a stable hierarchical structure.
- Most stable multiple star systems are arranged in a hierarchical manner.
Variants and Related Words
- Binary star (n): A system of two stars orbiting a common center of mass. (A multiple star system can contain one or more binary pairs).
- Star system (n): A general term for a small number of stars that orbit each other, bound by gravity. (A multiple star is a type of star system).
- Star cluster (n): A much larger grouping of stars, from hundreds to millions, held together by gravity. This is distinct from a multiple star system, which contains only a few stars.
Synonyms
- Multiple star system: This is a full synonym and is often used interchangeably.
- Triple star system, Quadruple star system, etc.: These are more specific terms indicating the exact number of stars (three, four, etc.) within the multiple star.
Notes on Meaning
The core meaning is strictly astronomical. Unlike the more general word "star," multiple star does not have metaphorical or idiomatic uses in everyday language. Its definition is precise and technical.
Noun
- a system of three or more stars associated by gravity