Bibcode
Østensen, R. H.; Oreiro, R.; Solheim, J.-E.; Heber, U.; Silvotti, R.; González-Pérez, J. M.; Ulla, A.; Pérez-Hernández, F.; Rodríguez-López, C.; Telting, J. H.
Bibliographical reference
Astronomy and Astrophysics, Volume 513, id.A6
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4
2010
Journal
Citations
70
Refereed citations
63
Description
Context. A search programme for pulsating subdwarf B stars was conducted
with the Nordic Optical Telescope on La Palma over 59 nights between
1999 and 2009. Aims: The purpose of the programme was to
significantly extend the number of rapidly pulsating sdB stars to better
understand the properties of this new group of variable compact stars.
Methods: Candidates were selected initially from the HS and HE
surveys, but were supplemented with additional objects from other
surveys. Short sequences of time-series photometry were made on the
candidates to determine the presence of rapid pulsations.
Results: In total twenty new pulsators were found in this survey, most
of which have already been published and some extensively studied. We
present four new short period pulsators, bringing the total of such
pulsators up to 49. We also give limits on pulsation amplitudes for 285
objects with no obvious periodic variations, summarise the results of
the survey, and provide improved physical parameters on the composite
pulsators for which only preliminary estimates were published earlier.
Full Table 5 is only available in electronic form at the CDS via
anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/513/A6
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