What is the name of the bright star system found in Perseus?

The bright star system found in the constellation Perseus is known as Algol. It is particularly notable for being an eclipsing binary system, which means that one star periodically passes in front of the other, causing variations in brightness that can be observed from Earth. Algol is often referred to as the "Demon Star" and has been documented by astronomers for centuries due to its distinctive dimming pattern, which occurs approximately every 2.87 days.

The significance of Algol lies not only in its brightness but also in its role in understanding stellar evolution and dynamics in binary star systems. It is one of the most studied variable stars and serves as a classic example of an eclipsing binary in modern astronomy. This helps astronomers gain insights into the masses and sizes of its component stars, contributing to broader knowledge about stellar behavior.

In contrast, Aldebaran is a prominent star in the constellation Taurus, Achernar is located in Eridanus, and Regulus is found in the constellation Leo. While these stars are well-known and bright, they are not part of the Perseus constellation.