PG 1613+426: A new sdB pulsator*
INAF - Osservatorio Astrofisico di Catania, Città Universitaria, 95123 Catania, Italy
2 Dipartimento di Fisica e Astronomia dell'Università, Sezione Astrofisica, Città Universitaria, 95123 Catania, Italy
Corresponding author: A. Bonanno, firstname.lastname@example.org
Accepted: 12 November 2002
We report the detection of short period oscillations in the hot subdwarf B (sdB) star PG 1613+426 from time-series photometry carried out with the 91-cm Cassegrain telescope of the Catania Astrophysical Observatory. This star, which is brighter than the average of the presently known sdB pulsators, with mag, has and , its position is near the hot end of the sdB instability strip, and it is a pulsator with a well observed peak in the power spectrum at . This star seems to be well suited for high precision measurements, which could detect a possible multi-mode pulsation behaviour.
Key words: stars: subdwarfs / stars: oscillations / stars: individual: PG 1613+426
© ESO, 2003