Observationally,how Can We Tell the Difference Between a White-Dwarf Supernova

question 76

Multiple Choice

Observationally,how can we tell the difference between a white-dwarf supernova and a massive-star supernova?

• A)A massive-star supernova is brighter than a white-dwarf supernova.
• B)A massive-star supernova happens only once,while a white-dwarf supernova can repeat periodically.
• C)The spectrum of a massive-star supernova shows prominent hydrogen lines,while the spectrum of a white-dwarf supernova does not.
• D)The light of a white-dwarf supernova fades steadily,while the light of a massive-star supernova brightens for many weeks.
• E)We cannot yet tell the difference between a massive-star supernova and a white-dwarf supernova.

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