Final answer:
A starburst galaxy is formed through the collision and interaction of galaxies, which leads to an increase in the rate of star formation. These galaxies are referred to as starburst galaxies, and they become much brighter during the starburst. Example: In Stephan's Quintet, the interaction of galaxies has resulted in burst of star formation.
Step-by-step explanation:
A starburst galaxy is likely to be formed through the collision and interaction of two galaxies. When galaxies collide, the interstellar matter within them is compressed, resulting in an increase in the rate of star formation. This increase can be as much as a factor of 100, leading to an abrupt burst of star formation, known as a starburst. The galaxies in which this increase occurs are called starburst galaxies. During a starburst, the galaxy becomes much brighter and easier to detect at large distances.
For example, when galaxies in the small group known as Stephan's Quintet interact gravitationally with each other, it results in distorted shapes and an increase in star formation. The ages of the star clusters within this group range from 2 million to 1 billion years old, suggesting that several different collisions have occurred, each leading to bursts of star formation.