How massive is the brown dwarf

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Suppose you observe a binary system containing a main-sequence star and a brown dwarf. The orbital period of the system is 1 year, and the average separation of the system is 1 AU. You then measure the Doppler shifts of the spectral lines from the main-sequence star and the brown dwarf, finding that the orbital speed of the brown dwarf in the system is 18 times greater than that of the main-sequence star. How massive is the brown dwarf? (In kg)

Reference no: EM131127072

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