Describe a difference between a nova and an X-ray burst

Answer the questions below after reading Chapter 13 “The Lives of Stars from Birth through Middle Age” in the textbook and reviewing the corresponding lecture notes. Make sure that you give your answer in a clear and well reasoned manner, providing necessary explanation on how did you come up with it. Please post your initial thread first, then reply to the posts of at least 3 peers. In order to reply, click on the peer’s thread first, then click reply.

Question 1: In which region of the Hertzsprung-Russell diagram would you expect a newly formed protostar first appear when it begins to shine at visible wavelengths? Explain your answer.

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Question 2: What is the reason, due to which a main-sequence star can be no smaller than 0.08 solar mass? Explain your answer.

( Section B)

Answer the questions below after reading Chapter 14 “The Deaths of the Stars” in the textbook and reviewing the corresponding lecture notes. Make sure that you give your answer in a clear and well reasoned manner, providing necessary explanation on how did you come up with it. Please post your initial thread first, then reply to the posts of at least 3 peers. In order to reply, click on the peer’s thread first, then click reply.

Question 1: Describe each of the following dwarf types: red, brown, and white. Which one is the largest?

Question 2: Describe a difference between a nova and an X-ray burst.

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