To measure the brightness of a star from earth, the brightness of the star Vega is...
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To measure the brightness of a star from earth, the brightness of the star Vega is used as a reference, and is assigned a relative intensity lo = 1. The magnitude m or any given star is defined by m = 2.5 log l, where l is the relative intensity of that star. a. What is the magnitude of Vega? To measure the brightness of a star from earth, the brightness of the star Vega is used as a reference, and is assigned a relative intensity lo = 1. The magnitude m or any given star is defined by m = 2.5 log l, where l is the relative intensity of that star. a. What is the magnitude of Vega?
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