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13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (a) Vega (M = 0.5)

13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (a) Vega (M = 0.5)

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13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (a) Vega (M = 0.5)
Transcribed Image Text:13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (a) Vega (M = 0.5)
Expert Solution
Concept and Principle:
  • The energy radiated per unit of time by an astronomical object is called luminosity.

 

  • The absolute magnitude which defines how bright the object will look if it was at a distance of 10 pc is a measure of the luminosity of the object.

 

  • The relationship between luminosity and absolute magnitude is given by,

L=L010(M−2.5)

Here L is the luminosity of the star and L0 is the zero-point luminosity and has a value of 3.0128 × 1028 W.

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