Open AccessKPD 0629–0016, a slowly pulsating hot subdwarf star
Author(s) -
Koen C.,
Green E. M.
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.1365-2966.2007.11716.x
Subject(s) - physics , subdwarf , astrophysics , amplitude , aliasing , star (game theory) , astronomy , stars , optics , filter (signal processing) , white dwarf , computer science , computer vision
The results of nine CCD photometric observing runs on KPD 0629–0016 are presented. During six of the runs measurements were obtained alternately through B and V filters. Four periodicities, for which there is good agreement between the frequencies identified in the B and V data, were extracted: these lie in the range 46–81 min. A fifth lower frequency appears to be definitely present, but is very uncertain due to aliasing. The ratios of the mode amplitudes measured in B and V , and the phase differences between variations in the two colours, are compatible with pulsation theory.