ZZ Ceti variables. These are nonradially pulsating white dwarfs that change their brightnesses with periods from 30 s to 25 min and amplitudes from 0.001 to 0.2 mag in V. They usually show several close period values. Flares of 1 mag are sometimes observed; however, these may be explained by the presence of close UV Ceti companions.
These variables are divided into the following subtypes:
Return to the page "pulsating variables"
Return to the page "typology"
Return to the AFOEV home page
Let us know your comments