Astrophysics (Index)About

star system

(a gravitationally bound set of a few stars)

A star system is a gravitationally bound set of a few stars (i.e., far fewer than a globular cluster or galaxy). Examples include Alpha Centauri with three stars, as well as any binary star. Related terms include triple star, multiple star (sometimes used to mean any system of more then one star but sometimes used to mean three or more), and higher order multiple star (specifically, three or more).

The term stellar system also includes single stars, plus objects, gas, and dust gravitationally bound to the star(s), e.g., the solar system. Occasionally the term star system is used with this meaning as well.

Further reading:

Referenced by pages:
Algol (Beta Per)
Alpha Centauri (α Centauri)
astronomical unit (AU)
binary star
cosmic dust
double-line spectroscopic binary (SB2)
double transit
DQ Tau
Epsilon Eridani
Epsilon Indi (ε Indi)
extra-solar planet
failed binary
gas flow
GG Tau
Lacaille 9352
Lalande 21185
Luyten 726-8
Lyapunov time
mass transfer
multiplicity fraction
post-common envelope binary (PCEB)
planetary system
Proxima b
Ross 154
Ross 248
supernova progenitor
solar system
substellar object
survey-based designator
timescale (t)
transit timing variations (TTV)
Wolf 359