Consider three main sequence stars of mass 0.2, 1.0, and 5 solar masses. Which of these three stars are a) transporting heat by convection in their centers? b) transporting heat by convection at their surfaces? c) transporting heat by radiative diffusion at their surfaces?
-
a) a 0.2 sm star is wholly convective.
Heavier stars are not convective at their centers.
b) all 3 stars are.
Our sun has convective cells all over its surface.
c) the 1 & 5 sm stars.
Heat transport by radiation in stars occurs as photons are absorbed and re-emitted many times on their way outwards. That occurs in stars like our sun and in heavier stars
Heavier stars are not convective at their centers.
b) all 3 stars are.
Our sun has convective cells all over its surface.
c) the 1 & 5 sm stars.
Heat transport by radiation in stars occurs as photons are absorbed and re-emitted many times on their way outwards. That occurs in stars like our sun and in heavier stars
-
a) transporting heat by convection in their center, this would be 0.2 solar and 5 solar mass stars.
b) transporting heat by convection at their surfaces, this would be 0.2 and 1 solar mass stars
c) transporting heat by radiation diffusion at their surfaces, this would be 5.solar mass stars
b) transporting heat by convection at their surfaces, this would be 0.2 and 1 solar mass stars
c) transporting heat by radiation diffusion at their surfaces, this would be 5.solar mass stars