Question

A young star with a luminosity 150L⊙ outflow velocity of 30 km s−1, and a mass loss rate of M ̇ = 10−4M⊙ yr−1 Does radiation pressure play a role in driving the outflow?

Answer 1

$p=\frac{\sigma v^2 M}{cL}=3.6\cdot 10^{-21}~Pa,$

the radiation pressure does not play a role in driving the outflow.