Match each term to its description. 1: Globular Cluster 2: Open Cluster 3: Main Sequence 4: Turnoff point匹配题

A

A relatively young, loose collection of stars found in the disk.

B

A spherical collection of hundreds of thousands of stars that are found in the halo of a galaxy. Generally contains very old stars dating back to the formation of the galaxy in which they reside.

C

A diagonal band on the Hertzsprung-Russell diagram containing stars during the majority of their lifetime. Stars evolve off the band at the end of their lives.

D

The point on the HR Diagram were the stars in a cluster are leaving the main sequence.

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类似问题

Stars of spectral type [Fill in the blank] leave the main sequence first, while stars of spectral type [Fill in the blank] leave the main sequence last. Give both spectral types as capital letters.

What does the turn-off point tell us about a cluster?

The temperature of 4 stars is listed below. Which star will burn up its hydrogen and move off the main sequence first?

判断题：寒冷的红色恒星最先离开主序星。

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