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Author Question: Which of the following is not a good reason why white-dwarf supernovae are good standard candles for ... (Read 36 times)

tiara099

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on: Jul 27, 2018
Which of the following is not a good reason why white-dwarf supernovae are good standard candles for distance measurements?
 
  A) White-dwarf supernovae are so bright that they can be detected even in very distant galaxies.
  B) All white-dwarf supernovae involve the explosion of stars of nearly the same mass.
  C) White-dwarf supernovae occur only among young and extremely bright stars.
  D) White-dwarf supernovae are common enough that we detect several every year.
  E) All white-dwarf supernovae have similar light curves, which makes them easy to distinguish from massive-star supernovae.

Question 2

The Hipparcos satellite has extended our accurate parallax distance measurements to over 200 parsecs.
 
  Indicate whether the statement is true or false


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wuly

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

TRUE


tiara099

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Reply 2 on: Jul 27, 2018
:D TYSM

yeungji

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Reply 3 on: Yesterday
Excellent

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