An H-R diagram for a globular cluster will show a horizontal brancha line of stars above the main-sequence but to the left of the subgiants and red giants. Which of the following statements about these horizontal branch stars is true?
A) They have inert (non-burning) carbon cores.
B) Their sole source of energy is hydrogen shell burning.
C) They generate energy through both hydrogen fusion and helium fusion.
D) In a particular star cluster, all horizontal branch stars have the same spectral type.
Question 2
The age of a star cluster may be estimated by determining the ________ of the Main Sequence at which stars are just in the process of evolving away to become giant stars.
Fill in the blank(s) with correct word
Plant Diagram
awesome diagram on evolution and diversity
anatomy diagram
OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ...
Nuchal Line
plant diagram