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Author Question: Most of the halo stars are very old. Indicate whether the statement is true or ... (Read 32 times)

Mr. Wonderful

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on: Jul 27, 2018
Most of the halo stars are very old.
 
  Indicate whether the statement is true or false

Question 2

The key to identifying a black hole candidate in a binary system is that
 
  A) one of the two stars cannot be seen.
  B) the unseen companion in the system must have a sufficiently high mass.
  C) the unseen star is a contact binary.
  D) the system must be a very strong source of radio emissions.
  E) the visible companion must be an evolving main sequence or giant star.


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Briannahope

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

TRUE

Answer to Question 2

B


Mr. Wonderful

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Reply 2 on: Jul 27, 2018
Gracias!

Joy Chen

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Reply 3 on: Yesterday
Excellent

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