Question

What are the main types of Star clusters?Check all that apply.

Answer 1

The three basic types of clusters astronomers have discovered are globular clusters, open clusters, and stellar associations. ...

Globular clusters were given this name because they are nearly symmetrical round systems of, typically, hundreds of thousands of stars. ...

Open clusters are found in the disk of the Galaxy.

Answer 2

The star clusters are defined as the enormous groups of stars. The three major types of clusters are as follows-

(1) Globular clusters- They are almost symmetrical and forms a circular type of system. They are many hundreds and thousands of stars. The surface temperatures of these stars are approximately 4000 K. These stars represent the oldest portion of the Milky Way Galaxy. Here, the stars are closely oriented due to the high gravitational force.

(2) Open clusters- These include stars of different ages and are mostly present in the disk of the Galaxy. These stars are comparatively younger than the globular clusters and have a diameter of less than about 30 light-years. Here, the stars are not closely oriented, whereas they are scattered as a result of which they are named as the open clusters.

(3) Stellar associations- These stars are about 100–500 light-years in terms of diameter. The stellar association is a bunch of very young stars that contains about 5 to 50 hot and bright Orange as well as Blue stars are scattered over a specific boundary in space.