The combined brightness of the two components of the binary is 0m. What is the brightness of each of the stars if: a) their luminosity is the same; b) the luminosity of one is twice the luminosity of the other?
a) Each has a gloss of 2.5 Ig2 = 0.75 ^ m
b) the brightness of one star is 2.5 lg l, 5 = 0.44 ^ m; other gloss – 2.5 lg3 = 1.19 ^ m
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