Reference : CoRoT's view of newly discovered B-star pulsators: results for 358 candidate B pulsators...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/117833
CoRoT's view of newly discovered B-star pulsators: results for 358 candidate B pulsators from the initial run's exoplanet field data
English
Degroote, P. [Institute of Astronomy - K.U. Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium]
Aerts, C. [Institute of Astronomy - K.U. Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium; Department of Astrophysics, University of Nijmegen, PO Box 9010, 6500 GL Nijmegen, The Netherlands]
Ollivier, M. [Institut d'Astrophysique Spatiale (IAS), Bâtiment 121, 91405 Orsay Cedex, France]
Miglio, Andrea [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
Debosscher, J. [Institute of Astronomy - K.U. Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium]
Cuypers, J. [Koninklijke Sterrenwacht van Belgium, Ringlaan 3, 1180 Brussels, Belgium]
Briquet, Maryline mailto [K.U.Leuven > Physics > Institute of Astronomy > >]
Montalban Iglesias, Josefa [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
Thoul, Anne mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
De Cat, P. [Koninklijke Sterrenwacht van Belgium, Ringlaan 3, 1180 Brussels, Belgium]
Balaguer-Núñez, L. [Departament d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal, 647, 08028 Barcelona, Spain]
Maceroni, C. [INAF - Osservatorio di Roma, via Frascati-33, Monteporzio Catone (RM), Italy]
Ribas, I. [Institut de Ciències de l'Espai (CSIC-IEEC), Campus UAB, Facultat de Ciències, Torre C5 parell, 2a pl, 08193 Bellaterra, Spain]
Auvergne, M. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France]
Baglin, A. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France]
Deleuil, M. [LAM, UMR 6110, CNRS/Univ. de Provence, 38 rue F. Joliot-Curie, 13388 Marseille, France]
Weiss, W. W. [Department of Astronomy, University of Vienna, Türkenschanzstrasse 17, 1180 Wien, Austria]
Jorda, L. [LAM, UMR 6110, CNRS/Univ. de Provence, 38 rue F. Joliot-Curie, 13388 Marseille, France]
Baudin, F. [Institut d'Astrophysique Spatiale (IAS), Bâtiment 121, 91405 Orsay Cedex, France]
Samadi, R. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex, France]
Noels-Grötsch, Arlette [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
1-Oct-2009
Astronomy and Astrophysics
EDP Sciences
506
471-489
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] methods: data analysis ; stars: oscillations ; stars: variables: general
[en] Context: We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's additional programme. <BR />Aims: We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted CoRoT space-based photometry and to compare them with known members of the β Cep and slowly pulsating B star (SPB) classes. <BR />Methods: We developed automated data analysis tools that include algorithms for jump correction, light-curve detrending, frequency detection, frequency combination search, and for frequency and period spacing searches. <BR />Results: Besides numerous new, classical, slowly pulsating B stars, we find evidence for a new class of low-amplitude B-type pulsators between the SPB and δ Sct instability strips, with a very broad range of frequencies and low amplitudes, as well as several slowly pulsating B stars with residual excess power at frequencies typically a factor three above their expected g-mode frequencies. <BR />Conclusions: The frequency data we obtained for numerous new B-type pulsators represent an appropriate starting point for further theoretical analyses of these stars, once their effective temperature, gravity, rotation velocity, and abundances will be derived spectroscopically in the framework of an ongoing FLAMES survey at the VLT. The CoRoT space mission was developed and is operated by the French space agency CNES, with the participation of ESA's RSSD and Science Programmes, Austria, Belgium, Brazil, Germany, and Spain. All frequency tables, including the identification of combination frequencies, are only available as online material. Frequency Tables are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/506/471 Bâtiment 121, 91405, Orsay Cedex, France. Postdoctoral Researcher, Fonds de la Recherche Scientifique - FNRS, Belgium. Postdoctoral Fellow of the Fund for Scientific Research, Flanders.
http://hdl.handle.net/2268/117833
10.1051/0004-6361/200911884
http://esoads.eso.org/abs/2009A%26A...506..471D
http://de.arxiv.org/abs/0907.2183

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