What are the characteristics of globular cluster stars?
A.no stars as hot as our Sun
B.old age and hundreds of thousands to millions of member stars
C.no main sequence stars left, with billions of member stars
D.a few hundred stars, most still on the main sequence
E.hundreds of light years across, with bright OB stars dominant
We don't answer lists of questions. Below is a link with you answer. You have to read (and hopefully learn a bit)
http://en.wikipedia.org/wiki/Globular_cluster
Globular clusters are dense clusters of stars that are typically found in the halo of galaxies. They have distinct characteristics that differentiate them from other types of star clusters.
Based on the options provided, the correct answer is B. Globular clusters are known for their old age and contain hundreds of thousands to millions of member stars. They are among the oldest objects in the universe, with ages ranging from 10 to 13 billion years. These clusters are usually spherical in shape and have a dense core.
Option A is incorrect because globular clusters can contain stars that are hotter than our Sun. While they generally have a concentration of cooler stars due to their old age, they can still have a variety of stellar types.
Option C is also incorrect because globular clusters do have main sequence stars. In fact, many of their member stars are still on the main sequence, which is the stage of stellar evolution where stars generate energy through nuclear fusion.
Option D is incorrect because globular clusters typically have more than a few hundred stars. The number can range from hundreds of thousands to even millions of stars.
Option E is incorrect because globular clusters are not hundreds of light years across. They are much smaller, usually only a few tens of light years in diameter. Furthermore, the dominant stars in globular clusters are typically older and less massive than bright OB stars.
For a more in-depth understanding of globular clusters and their characteristics, it is highly recommended to refer to the linked Wikipedia page: http://en.wikipedia.org/wiki/Globular_cluster