Multiple Choice
What is the most important factor that determines the point in the Hertzsprung-Russell diagram where a protostar reaches the main sequence?
A) The initial luminosity of the protostar
B) The size of the interstellar cloud from which the protostar formed
C) The initial temperature of the protostar
D) The mass of the protostar
Correct Answer:
Verified
Correct Answer:
Verified
Q79: The stellar remnant left at the end
Q80: What is the most abundant element in
Q81: Stars spend the majority of their lives<br>A)
Q82: Population I stars are members of a
Q83: What is a protostar?<br>A) A contracting sphere
Q85: Protostars with emission lines as well as
Q86: A reflection nebula is made visible by<br>A)
Q87: What causes the characteristic blue color of
Q88: What is the difference between dark nebulae,emission
Q89: The hydrogen in the outer layers of