Approximate lifetime of stars located on the main sequence

The main sequence is the stage of stellar evolution. This stage begins in stars after the protostar stage. At the beginning of the main sequence stage, the age of the star is considered to be zero. It is possible to calculate the time spent on the main sequence for a star by knowing such a time for the Sun, as well as the mass and luminosity of the Sun and the star.

Notation:

1. \(L_\odot\) (L_Sun) is sun_luminosity.

2. \(M_\odot\) (M_Sun) is solar_mass.

Links:

1. Wikipedia, second formula.

lifetime

Lifetime (time) of the star on the main sequence.

Symbol:

t

Latex:

\(t\)

Dimension:

time

star_mass

mass of the star.

Symbol:

m

Latex:

\(m\)

Dimension:

mass

star_luminosity

luminosity of the star.

Symbol:

L

Latex:

\(L\)

Dimension:

power

sun_lifetime

Lifetime (time) on time main sequence of the Sun.

Symbol:

t_Sun

Latex:

\(t_\odot\)

Dimension:

time

law

t = t_Sun * m / M_Sun * L_Sun / L

Latex:

\[t = t_\odot \frac{m}{M_\odot} \frac{L_\odot}{L}\]