When does a type-II supernova occur?
A) when a white dwarf's mass exceeds the Chandrasekhar-Landau limit
B) when the iron core of a massive star collapses
C) directly following a helium flash
D) when two neutron stars collide
Correct Answer:
Verified
Q24: Why can't massive stars generate energy through
Q25: What is a white dwarf composed of?
A)hydrogen
Q26: What does the Chandrasekhar-Landau limit tell us?
A)Accretion
Q27: Why can't the lowest mass stars become
Q28: After they leave the main sequence,what happens
Q30: Which of the following is almost always
Q31: What is a planetary nebula?
A)the expelled outer
Q32: What produces synchrotron radiation?
A)objects with temperatures below
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