Question

Consider that the stars in the Main Sequence follow the luminosity relation L = cM4 including...

Consider that the stars in the Main Sequence follow the luminosity relation L = cM4 including the Sun, where c is a constant. Calculate the value of c in SI units. If the sun had been born with 10% more of mass, how much more luminous would it be?

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Answer #1

Given,

The luminosity of the Sun

Mass of the Sun

Using above relation

If the sun had been born with 10% more mass then the mass of the sun

So, the new luminosity

% change in luminosity

So the sun would be 46.41% more luminous then it is now.

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