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Author Question: How does metal content vary between young disk stars and older halo stars? Why? What will be an ... (Read 145 times)

09madisonrousseau09

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on: Jul 27, 2018
How does metal content vary between young disk stars and older halo stars? Why?
 
  What will be an ideal response?

Question 2

What two things are needed to create an emission nebula?
 
  A) interstellar gas and dust
  B) hydrogen gas and carbon dust
  C) hydrogen fusion and helium ionization
  D) hot stars and interstellar gas, particularly hydrogen
  E) cool stars and much interstellar dust


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bitingbit

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

Older halo stars are far less abundant in elements heavier than helium than are nearby younger disk stars, which are much richer in the heavier metals produced by later generations of supernovae.

Answer to Question 2

D


09madisonrousseau09

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Reply 2 on: Jul 27, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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