A Lambda Eridani Variable is a class of Be stars that show small amplitude variations of a few hundredths of a magnitude. The variations are highly regular with periods between 0.5 and 2.0 days, and they were initially described as periodic Be stars.
Lambda Eridani Variables are a category of Be stars known for their subtle, regular changes in brightness, usually measured in hundredths of a magnitude, occurring over periods ranging from 0.5 to 2.0 days and first identified as periodic Be stars.