Multiple Choice
Protostars with emission lines as well as absorption lines in their spectra and whose luminosity can change irregularly as they eject material into space are
A) asymptotic giant branch stars.
B) T Tauri stars.
C) red-giant stars.
D) main-sequence stars.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
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
Q84: What is the most important factor that
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
Q90: The age of a cluster can be