Main-sequence pulsators in the OGLE-II Galactic fields

Details Main-sequence pulsators in the OGLE-II Galactic fields Main-sequence pulsators in the OGLE-II Galactic fields

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop..132p&link_type=abstract

NOAO Proposal ID #2007A-0132

Physics

Scientific paper

We found a sample of over 800 main-sequence pulsators (of (beta) Cephei, SPB, (delta) Scuti and (gamma) Doradus type) in the photometric catalogs resulted from the OGLE-II/MACHO surveys. Preliminary analysis of the whole OGLE-II database with the time-series photometry, which has been recently made available to the public, indicates that we can expect to find several times larger sample of these pulsators. The periods alone, however, do not allow to distinguish (beta) Cephei and (delta) Scuti stars in the short-period domain, and SPB and (gamma) Doradus stars in the long-period range. This can be, however, easily done with the UBV photometry which we are going to carry out with the 1-m CTIO telescope. Once the final classification will be done, the pulsating properties of the four above- mentioned types of the main-sequence pulsators will be investigated and defined.

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