Two stars with the same luminosity form a close binary pair. Show that when they are observed together, the combined apparent magnitude is 0.75 mags less (i.e. brighter) than the sum of the individual magnitudes.
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Two stars with the same luminosity form a close binary pair. Show that when they are observed together, the combined apparent magnitude is 0.75 mags less (i.e. brighter) than the sum of the individual magnitudes.
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