An Eclipsing Binary System Consists of

question 59

Multiple Choice

An eclipsing binary system consists of

• A) two stars orbiting each other in which periodic spectral line shifts due to Doppler shift are measured.
• B) two stars that are clearly resolved as separate but orbiting each other and obviously gravitationally bound to each other.
• C) a star that is periodically eclipsed by the Moon.
• D) two stars whose combined light output toward Earth varies regularly as one star periodically moves in front of the other.