The slowly pulsating sdB star EC 21324−1346

Abstract

We present results from a two-week, single-site photometric campaign on the slowly pulsating sdB star, EC 21324-1346. Nine frequencies are detected between about 333 and 125 μHz (periods between 3000 and 8000 s) with amplitudes ranging from 0.003 to 0.001 mag; large for this class of star. Comparison with sparser, earlier data indicates that some of these oscillations are persistent, though at least one shows clear evidence of substantial amplitude variation.