2009MNRAS.397..453K

We report the discovery of pulsations in two DB stars found in the Edinburgh-Cape blue object survey. The light curve of EC 04207-4748 appears to be dominated by a strong variation at 2235 µHz (447s) and its first overtone near 4475 µHz (223s). Two other peaks appear in the periodograms of all three data sets for this star; near 2370 µHz (∼420s) and 3000 µHz (∼333s), though these are less accurately defined. EC 05221-4725 is less easy to specify with the currently available data; it appears to have one coherent frequency near 1114µHz (898s), but is obviously multiperiodic and probably has several more frequencies near the one clearly observed.