Open AccessThe slowly pulsating sdB star EC 21324−1346
Author(s) -
Kilkenny D.,
Copley C.,
Zietsman E.,
Worters H.
Publication year - 2007
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2007.11382.x
Subject(s) - physics , astrophysics , amplitude , star (game theory) , astronomy , optics
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.