An eclipsing binary system consists of
A) a star that is periodically eclipsed by the Moon.
B) two stars that periodically eclipse each other, as seen from Earth.
C) two stars in which spectral lines move back and forth periodically due to Doppler shift, indicating mutually orbiting stars.
D) two mutually orbiting and gravitationally bound stars that are close enough to be resolved when viewed from Earth.

Question

Quizplus · Accepted Answer

An eclipsing binary system is defined by two stars that periodically eclipse each other from our point of view on Earth, leading to changes in the system's observed brightness as one star moves in front of the other.

An Eclipsing Binary System Consists of