What causes Alphecca?

Alphecca, also known as Alpha Coronae Borealis, is a binary star system located in the constellation Corona Borealis. Its brightness is primarily due to its main component, a giant star, which undergoes nuclear fusion in its core. The variations in its brightness and characteristics are influenced by its binary nature, where the gravitational interaction between the two stars affects their atmospheres and overall luminosity. Additionally, factors such as stellar evolution and distance from Earth contribute to its observed properties.