GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following statements about binary stars is correct?
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A binary star is a star system consisting of two stars that orbit their common mass centers in their orbits.
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Systems of two or more stars are called multiple star systems.
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Research over the past two centuries have shown that more than half of the visible stars are multi-star systems.
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Two examples of binary star are Sirius and Cygnus X-1.
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Explanation:
Detailed explanation-1: -Spectroscopic and Eclipsing Binaries–spectroscopic binaries are seen from their line spectrum, by following the Doppler shifts as the stars orbit each other.
Detailed explanation-2: -Visual binaries. Spectroscopic binaries. Eclipsing binaries. Astrometric binaries. “Exotic” types.
There is 1 question to complete.