Reference : Non-radial oscillations in the red giant HR 7349 measured by CoRoT
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/31614
Non-radial oscillations in the red giant HR 7349 measured by CoRoT
English
Carrier, F. mailto [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium]
De Ridder, J. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium]
Baudin, F. [Institut d'Astrophysique Spatiale, Campus d'Orsay, 91405 Orsay, France]
Barban, C. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France]
Hatzes, A. P. [Thüringer Landessternwarte, 07778 Tautenburg, Germany]
Hekker, S. [University of Birmingham, School of Physics and Astronomy, Edgbaston, Birmingham B15 2TT, UK ; Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, Belgium ; Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium]
Kallinger, T. [University of British Columbia - UBC > Department of Physics and Astronomy / University of Vienna Institute for Astronomy > Institute for Astronomy >]
Miglio, Andrea mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Montalban Iglesias, Josefa mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Morel, Thierry mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
Weiss, W. W. [Institute for Astronomy, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria]
Auvergne, M. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France]
Baglin, A. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France]
Catala, C. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France]
Michel, E. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France > > > >]
Samadi, R. [LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France > > > >]
1-Jan-2010
Astronomy and Astrophysics
EDP Sciences
509
73
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: variables: general ; stars: oscillations ; stars: interiors ; stars: individual: HR 7349
[en] Context. Convection in red giant stars excites resonant acoustic waves whose frequencies depend on the sound speed inside the star, which in turn depends on the properties of the stellar interior. Therefore, asteroseismology is the most robust available method for probing the internal structure of red giant stars. <BR /> Aims: Solar-like oscillations in the red giant HR 7349 are investigated. <BR /> Methods: Our study is based on a time series of 380 760 photometric measurements spread over 5 months obtained with the CoRoT satellite. Mode parameters were estimated using maximum likelihood estimation of the power spectrum. <BR /> Results: The power spectrum of the high-precision time series clearly exhibits several identifiable peaks between 19 and 40 μHz showing regularity with a mean large and small spacing of Πν = 3.47 ± 0.12 μHz and δν[SUB]02[/SUB] = 0.65 ± 0.10 μHz. Nineteen individual modes are identified with amplitudes in the range from 35 to 115 ppm. The mode damping time is estimated to be 14.7[SUP]+4.7[/SUP][SUB]-2.9[/SUB] days. The CoRoT space mission has been developed and is operated by CNES, with the contribution of Austria, Belgium, Brazil, ESA, Germany and Spain.
http://hdl.handle.net/2268/31614
10.1051/0004-6361/200912749
http://adsabs.harvard.edu/abs/2010A%26A...509A..73C
http://de.arxiv.org/abs/1001.1655

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
AA_509_A73.pdfNo commentaryPublisher postprint1.25 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.