There is currently only one astrononical definition for the tag 'classicalcepheid'.
Cepheid, Cepheid variable star, bump Cepheid, classical Cepheid, delta Cephei star
baadewesselinkmethod, blherculisstar, cepheiddistance, heiiionizationzone, rrlyraestar, wvirginisstar, dwarfcepheid, instabilitystrip, kappamechanism, periodagerelation, periodcolorrelation, periodluminositycolorrelation, periodluminosityrelation, periodradiusrelation, periodspectrumrelation, radialpulsation, radiusluminosityrelation