| Issue |
A&A
Volume 398, Number 1, January IV 2003
|
|
|---|---|---|
| Page(s) | 283 - 285 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20021664 | |
| Published online | 14 January 2003 | |
PG 1613+426: A new sdB pulsator*
1
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, abo@ct.astro.it
Received:
22
October
2002
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
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