What is protostar-metallicity and variable star

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Reference no: EM13276514

Chap 1:

1) What is a protostar?

2) What is the difference between deuterium fusion and regular proton-proton cycle fusion?

3) How is lithium used to distinguish between brown dwarfs of different masses?

4) Summarize observational evidence we have for our models of star formation.

5) List and describe 3 methods that we use to find exoplanets.

6) What is the Kepler mission, and why is it important?

7) Contrast OB Associations, open clusters, and globular clusters.

Chap 2:

1) Contrast population I, II, and III stars. Which is the sun?

2) What is “metallicity”?

3) Contrast the proton-proton and triple alpha fusion cycles.

4) What is shell burning?

5) Define ZAMS, asymptotic giant, and red giant branch

6) What will ultimately happen to the earth?

7) Summarize the evolution of the sun from birth until death.

8) How does the evolution of a high mass star differ from that of the sun?

9) Why is iron important to astronomers?

10) What did Carl Sagan mean when he said ‘We are star stuff”?

11) What is a variable star?

12) Contrast an intrinsic and extrinsic variable. Give an example of each.

13) Why are Cepheid variables really important to astronomers? How do we use them?

14) What is a white dwarf? Why doesn’t it collapse further?

15) Define Pauli Exclusion Principle.

16) Define Chandrasekhar limit.

Reference no: EM13276514

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