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arXiv:0706.4083 (astro-ph)
[Submitted on 27 Jun 2007]

Title:Pulsational frequencies of the eclipsing delta-Scuti star HD 172189

Authors:J. E. S. Costa, E. Michel, J. Pena, O. Creevey, Z. P. Li, M. Chevreton, J. A. Belmonte, M. Alvarez, L. Fox Machado, L. Parrao, F. Perez Hernendez, A. Fernandez, J. R. Fremy, S. Pau, R. Alonso
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Abstract: The eclipsing delta-Scuti star HD 172189 is a probable member of the open cluster IC 4756 and a promising candidate target for the CoRoT mission.
The detection of pulsation modes is the first step in the asteroseismological study of the star. Further, the calculation of the orbital parameters of the binary system allows us to make a dynamical determination of the mass of the star, which works as an important constraint to test and calibrate the asteroseismological models.
From a detailed frequency analysis of 210 hours of photometric data of HD 172189 obtained from the STEPHI XIII campaign we have identified six pulsation frequencies with a confidence level of 99% and a seventh with a 65% confidence level in the range between 100-300 uHz. In addiction, three eclipses were observed during the campaign, allowing us to improve the determination of the orbital period of the system.
Comments: 6 pages, 7 figures
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0706.4083 [astro-ph]
  (or arXiv:0706.4083v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0706.4083
Journal reference: Astron.Astrophys.468:637-642,2007
Related DOI: https://doi.org/10.1051/0004-6361%3A20065784

Submission history

From: Jose Eduardo Costa Dr. [view email]
[v1] Wed, 27 Jun 2007 19:38:59 UTC (353 KB)
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