Reference : Detection of frequency spacings in the young O-type binary HD 46149 from CoRoT photometry
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/83604
Detection of frequency spacings in the young O-type binary HD 46149 from CoRoT photometry
English
Degroote, P. mailto [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium]
Briquet, Maryline mailto [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium]
Auvergne, M. [LESIA, Observatoire de Paris, CNRS UMR 8109, Université Pierre et Marie Curie, Université Denis Diderot, 5 place J. Janssen, 92105 Meudon, France]
Simón-Díaz, S. [Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, 38205 La Laguna, Tenerife, Spain]
Aerts, C. [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium; Department of Astrophysics, IMAPP, University of Nijmegen, PO Box 9010,6500 GL Nijmegen, The Netherlands]
Noels-Grötsch, Arlette mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Rainer, M. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy]
Hareter, M. [Institut für Astronomie, Universität Wien Türkenschanzstrasse 17, 1180Vienna, Austria]
Poretti, E. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy]
Mahy, Laurent mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique observationnelle (sol et espace) >]
Oreiro, R. [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium]
Vučković, M. [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium]
Smolders, K. [Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D, 3001Leuven, Belgium]
Baglin, A. [LESIA, Observatoire de Paris, CNRS UMR 8109, Université Pierre et Marie Curie, Université Denis Diderot, 5 place J. Janssen, 92105 Meudon, France]
Baudin, F. [Institut d'Astrophysique Spatiale, CNRS/Université Paris XI UMR 8617, 91405 Orsay, France]
Catala, C. [LESIA, Observatoire de Paris, CNRS UMR 8109, Université Pierre et Marie Curie, Université Denis Diderot, 5 place J. Janssen, 92105 Meudon, France]
Michel, E. [> >]
Samadi, R. [LESIA, Observatoire de Paris, CNRS UMR 8109, Université Pierre et Marie Curie, Université Denis Diderot, 5 place J. Janssen, 92105 Meudon, France]
1-Sep-2010
Astronomy and Astrophysics
519
38
Yes (verified by ORBi)
International
0004-6361
[en] binaries: spectroscopic ; stars: individual: HD 46149 ; stars: massive ; stars: oscillations ; asteroseismology
[en] <BR /> Aims: Using the CoRoT space based photometry of the O-type binary HD 46149, stellar atmospheric effects related to rotation can be separated from pulsations, because they leave distinct signatures in the light curve. This offers the possibility of characterising and exploiting any pulsations seismologically. <BR /> Methods: Combining high-quality space based photometry, multi-wavelength photometry, spectroscopy and constraints imposed by binarity and cluster membership, the detected pulsations in HD 46149 are analyzed and compared with those for a grid of stellar evolutionary models in a proof-of-concept approach. <BR /> Results: We present evidence of solar-like oscillations in a massive O-type star, and show that the observed frequency range and spacings are compatible with theoretical predictions. Thus, we unlock and confirm the strong potential of this seismically unexplored region in the HR diagram. The CoRoT space mission was developed and is operated by the French space agency CNES, with participation of ESA's RSSD and Science Programmes, Austria, Belgium, Brazil, Germany, and Spain.Based on observations made with the ESO telescopes at La Silla Observatory under the ESO Large Programme LP182.D-0356.Based on observations made with the Mercator Telescope, operated on the island of La Palma by the Flemish Community, at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias.
Researchers
http://hdl.handle.net/2268/83604
10.1051/0004-6361/201014543
http://adsabs.harvard.edu/abs/2010A%26A...519A..38D
http://de.arxiv.org/abs/1006.3139

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
hd46149Corot_aa.pdfAuthor preprint1.36 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.