Multiple Choice
A type-II supernova
A) occurs when a white dwarf's mass exceeds the Chandrasekhar limit.
B) is the result of helium flash.
C) is characterized by a spectrum that shows hydrogen lines.
D) occurs when the iron core of a massive star collapses.
E) c and d
Correct Answer:
Verified
Correct Answer:
Verified
Q1: After what evolutionary stage does a star
Q2: Synchrotron radiation is produced<br>A) in planetary nebulae.<br>B)
Q3: Because massive stars have more gravitational energy
Q4: The explosion of a supernova typically leaves
Q7: A white dwarf whose red giant companion
Q8: The Algol paradox is explained by considering<br>A)
Q9: The diagram below shows a light curve
Q10: A planetary nebula<br>A) produces an absorption spectrum.<br>B)
Q11: The Chandrasekhar limit is _ solar masses.<br>A)
Q99: A nova is almost always associated with<br>A)