Delta Scuti stars are a type of variable star that exhibit changes in brightness due to pulsations in their outer layers. These stars are typically located in the Milky Way galaxy and are classified as pulsating variables. They are often found in the spectral class A and B, indicating they are relatively hot and massive. The brightness variations in Delta Scuti stars occur over short periods, usually ranging from a few hours to a couple of days. These stars are important for studying stellar evolution and the internal structure of stars, as their pulsation patterns provide insights into their physical properties and age.