In the diagram below, which point indicates the location on the HR diagram of a one solar mass star when it undergoes helium flash?
a.
1
b.
2
c.
3
d.
4
e.
5
Question 2What is the approximate age of the star cluster in the HR diagram below? (Hint: Main Sequence Stars of spectral between types A and B core supply of hydrogen is sufficient to last about 250 million years. Between A and F about 2 billion years.Type G about 10 billion years. Between K and M about 30 billion years..)
a.
200 million years
b.
2 billion years
c.
10 billion years
d.
30 billion years
e.
The age of the cluster can not be estimated from an HR diagram of the cluster.
Question 3The diagram below is an HR diagram. The line indicates the location of the main sequence. Which of the five labeled locations on the HR diagram indicates a luminosity and temperature similar to that of a T Tauri star?
a.
1
b.
2
c.
3
d.
4
e.
5
Question 4Below is a radial velocity curve for a spectroscopic binary. Which of the stars is most massive? ____________________
What will be an ideal response?
Question 5On the HR diagram below, indicate the location of the white dwarf stars.
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