Deck 70: Star Clusters

Question 1

Star clusters provide a way to test stellar evolution theory because

A) all the stars in a cluster are the same age and the same type.
B) all the stars in a cluster are different ages and come in many different types.
C) all the stars in a cluster are the same age and come in many different types.
D) all the stars in a cluster are different ages and the same type.

Answer 1

all the stars in a cluster are the same age and come in many different types.

Question 2

When looking at stars, the brightest are the easiest to study. This is called

A) bright effect.
B) selection effect.
C) mass effect.
D) radius effect.

Answer 2

selection effect.

Question 3

This type of cluster has upwards of 1 million stars:

A) closed cluster
B) globular cluster
C) open cluster
D) stellar association

Answer 3

globular cluster

Question 4

A group of stars that is few hundred light years across and contains about 100 stars is likely a ______.

A) closed cluster
B) globular cluster
C) open cluster
D) stellar association

Question 5

A cluster of a few hundred thousand stars is likely a _______.

Question 6

The point where a star leaves the main sequence is called its ________.

Question 7

The Pleiades are most likely an open cluster.

Question 8

The age of a star cluster can be determined by its turnoff point.