Massive main-sequence stars are more luminous than low-mass main-sequence stars because massive main-sequence stars have:
A. greater core pressures and temperatures.
B. wider absorption lines.
C. greater amounts of unstable heavy elements.
D. more convection.
Answer:A
Massive main-sequence stars are more luminous than low-mass main-sequence stars because massive main-sequence stars have:
A. greater core pressures and temperatures. B. wider absorption lines. C. greater amounts of unstable heavy elements. D. more convection.