b Persei

b Persei is a variable star located in the constellation Perseus. It is a pulsating variable, specifically a Beta Cephei variable, meaning its brightness changes due to pulsations in its outer layers. These pulsations cause periodic expansions and contractions of the star's surface, leading to variations in its temperature and luminosity.

The star's variability is characterized by a small amplitude and a short period, typically on the order of hours. Beta Cephei variables are hot, massive stars of spectral types B0 to B2. They are significantly hotter and more luminous than our Sun.

Observations of b Persei's light curve reveal the characteristic rapid rise to maximum brightness followed by a slower decline. The exact period and amplitude of the variations can vary slightly over time.

Studying b Persei and other Beta Cephei variables provides valuable insights into stellar structure, stellar evolution, and the internal processes that drive stellar pulsations.