Problem A.2: Brightness of a Binary Star (4 Points) A binary star system consists of two stars very close to one another. The two stars have apparent magnitudes of m₁ = 2 and m₂ = 3. The apparent magnitude m is defined with a stars' flux density F, compared to a reference star with mo and Fo: m-mo= -2.5 log10 Calculate the total apparent magnitude of the binary star system.
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Calculate the total apparent magnitude of the binary star system.
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- Calculate the absolute magnitude of a star at a distance of 6 pc with an apparent magnitude of 3.The sketch below shows an H-R diagram for a star cluster. Consider the star to which the arrow points. How is it currently generating energy? Temperature A. by hydrogen shell burning around an inert helium core B. by gravitational contraction C. by core hydrogen fusion D.by core helium fusion combined with hydrogen shell burning E. by both hydrogen and helium shell burning around an inert carbon core Luminosity -→What is the size of a star with a temperature three times as hot as the sun and the luminosity of 100 suns? (L=R^2T^4)
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