Pulsating Variables

Cepheids

Giants whose pulsation period and luminosity are related

RR Lyrae

Blue giants whose pulsation period is usually a few hours

Mira

Huge, cool luminous giants with periods from months to years

Irregulars and Semi-Regulars

Giants or supergiants with irregular or interrupted pulsations

ZZ Ceti Stars

White dwarf stars that exhibit minor pulsations on minute timescales