Binary Star Systems
A stellar system of two stars is known as a binary star, binary star system or physical double star. If there are no tidal effects, no perturbation from other forces, and no transfer of mass from one star to the other, such a system is stable, and both stars will trace out an elliptical orbit around the center of mass of the system indefinitely. See Two-body problem.
Examples of binary systems are Sirius, Procyon and Cygnus X-1, the last of which probably consists of a star and a black hole.
Read more about this topic: Star System
Famous quotes containing the words star and/or systems:
“For a painter, the Mecca of the world, for study, for inspiration and for living is here on this star called Paris. Just look at it, no wonder so many artists have come here and called it home. Brother, if you can’t paint in Paris, you’d better give up and marry the boss’s daughter.”
—Alan Jay Lerner (1918–1986)
“We have done scant justice to the reasonableness of cannibalism. There are in fact so many and such excellent motives possible to it that mankind has never been able to fit all of them into one universal scheme, and has accordingly contrived various diverse and contradictory systems the better to display its virtues.”
—Ruth Benedict (1887–1948)