Asteroseismology of Pulsating sdB Stars Observed at Catania Astrophysical Observatory

Bonanno A.; Frasca A.; Lanza A. F.; Ventura R.; Mignemi B.; Silvotti R.

doi:10.1515/astro-2017-0052

Open Astronomy (Jun 2003)

Asteroseismology of Pulsating sdB Stars Observed at Catania Astrophysical Observatory

Bonanno A.,
Frasca A.,
Lanza A. F.,
Ventura R.,
Mignemi B.,
Silvotti R.

Affiliations

Bonanno A.: INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123, Catania, Italy
Frasca A.: INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123, Catania, Italy
Lanza A. F.: INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123, Catania, Italy
Ventura R.: INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123, Catania, Italy
Mignemi B.: INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123, Catania, Italy
Silvotti R.: Osservatorio Astronomico di Capodimonte, via Moiariello, 16 I-80131, Napoli, Italy

DOI: https://doi.org/10.1515/astro-2017-0052
Journal volume & issue: Vol. 12, no. 2
pp. 287 – 294

Abstract

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We present analysis of the data collected during three years of photometric campaigns at the 91 cm Cassegrain telescope of the Catania Astrophysical Observatory to observe the pulsating subdwarf B star PG 1336-018. For this eclipsing binary system, we obtained a precise determination of the orbital period which turns out to be P = 0.10101599±0.00000002 days. Time-series photometry reveals pulsation periods near 174 and 184 seconds. We also discuss a preliminary analysis of the data obtained in 2002 for the pulsating subdwarf PG 1325+101.

Published in Open Astronomy

ISSN: 2543-6376 (Online)
Publisher: De Gruyter
Country of publisher: Poland
LCC subjects: Science: Astronomy
Website: https://www.degruyter.com/view/j/astro

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