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A photometric study of Be stars located in the seismology fields of COROT

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A photometric study of Be stars located in the seismology fields of COROT

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dc.contributor.author Gutiérrez-Soto, Juan
dc.contributor.author Fabregat Llueca, Juan
dc.contributor.author Suso, J.
dc.contributor.author Lanzara, M.
dc.contributor.author Garrido, R.
dc.contributor.author Hubert, A.-M.
dc.date.accessioned 2010-07-30T11:06:43Z
dc.date.available 2010-07-30T11:06:43Z
dc.date.issued 2007
dc.identifier.uri http://hdl.handle.net/10550/16744
dc.description.abstract Context. In preparation for the COROT mission, an exhaustive photometric study of Be stars located in the seismology fields of the mission has been performed. The very precise and long-time-spanned photometric observations gathered by the COROT satellite will give important clues on the origin of the Be phenomenon. Aims. The aim of this work is to find short-period variable Be stars located in the seismology fields of COROT, and to study and characterise their pulsational properties. Methods. Light curves obtained at the Observatorio de Sierra Nevada, together with data from Hipparcos and ASAS-3 for a total of 84 Be stars, were analysed in order to search for short-term variations. We applied standard Fourier techniques and non-linear least-square fitting to the time series. Results. We found 7 multiperiodic, 21 mono-periodic and 26 non-variable Be stars. Short-term variability was detected in 74% of early-type Be stars and in 31% of mid- to late-type Be stars. We show that non-radial pulsations are more frequent among Be stars than in slow-rotating B stars of the same spectral range. en
dc.language.iso en en
dc.relation http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361:20078252&Itemid=129 en
dc.source Gutiérrez-Soto, J., Fabregat, J., Suso, J., Lanzara, M., Garrido, R., Hubert, A.-M. and M. Floquet(2007): A photometric study of Be stars located in the seismology fields of COROT, Astronomy and Astrophysics, núm. 476, vol. 2, pp. 927-933 en
dc.subject Stars : emission-line, Be; Stars : oscillations (including pulsations); Stars : statistics; Techniques : photometric en
dc.title A photometric study of Be stars located in the seismology fields of COROT en
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Estrellas en
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Otras en
dc.identifier.doi 10.1051/0004-6361:20078252 en
dc.description.private juan.gutierrez-soto@uv.es; fabregaj@uv.es; en
dc.identifier.idgrec 049048 en
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