Rodriguez-Lopez, C Ulla, A Garrido, R Manteiga, M Casanova, V Sota, A Ostensen, Roy Oreiro, R #
Astronomical soc pacific
14th European Workshop on White Dwarfs, Proceedings vol:334 pages:627-630
ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
14th European Workshop on White Dwarfs Kiel, GERMANY, JUN 19-JUL 23, 2004
We present the preliminary results of an ongoing photometric campaign to search for possible pulsations among O-type hot subdwarfs (sdOs). Fast GCD photometry has already been obtained for about 20 targets. A clear evidence of the presence of pulsations has not been obtained so far. We recommend 4 objects for re-observation.