In Some Binary Star Systems,such as β Lyrae,essentially No Light

question 257

Multiple Choice

In some binary star systems,such as β Lyrae,essentially no light is seen from the more massive star because the:

• A) more massive star is hidden by an accretion disk of material from the less massive star.
• B) orbit of the more massive star keeps it hidden behind the larger but less massive star as seen from Earth.
• C) more massive star is a black hole from which light cannot escape.
• D) more massive star is still hidden in the dust clouds from which it formed.

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