A photometric study of Be stars located in the seismology fields of COROT
| Autor: | A.-M. Hubert, Michele Floquet, Juan Fabregat, R. Garrido, J. Suso, M. Lanzara, Juan Gutiérrez-Soto |
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| Rok vydání: | 2007 |
| Předmět: |
statistics [Stars]
ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Otras [UNESCO] FOS: Physical sciences oscillations (including pulsations) [Stars] Context (language use) Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences 0103 physical sciences UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Otras Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Physics 010308 nuclear & particles physics photometric [Techniques] Astrophysics (astro-ph) Astronomy and Astrophysics Light curve Stars : emission-line Be Stars : oscillations (including pulsations) Stars : statistics Techniques : photometric Stars emission-line Be [Stars] Space and Planetary Science Satellite Astrophysics::Earth and Planetary Astrophysics UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Estrellas Seismology ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Estrellas [UNESCO] |
| Zdroj: | 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 RODERIC. Repositorio Institucional de la Universitat de Valéncia instname |
| DOI: | 10.48550/arxiv.0709.4606 |
| Popis: | Context: In preparation for the COROT mission, an exhaustive photometric study of Be stars located in the seismology fields of the COROT mission has been performed. The very precise and long-time-spanned photometric observations gathered by the COROT satellite will give important clues of 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 of a total of 84 Be stars have been analysed in order to search for short-term variations. We have applied standard Fourier techniques and non-linear least-square fitting to the time series. Results: We have found 7 multiperiodic, 21 mono-periodic and 26 non-variable Be stars. Short-term variability has been detected in 74% of early-type Be stars and in 31% of mid- to late-type Be stars. We have shown that non-radial pulsations are most frequent among Be stars than in slow-rotating B stars of the same spectral range. Comment: Accepted in A&A with date 28/09/2007 |
| Databáze: | OpenAIRE |
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