Serveur d'exploration sur les relations entre la France et l'Australie

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MODELING KEPLER OBSERVATIONS OF SOLAR-LIKE OSCILLATIONS IN THE RED GIANT STAR HD 186355

Identifieur interne : 004797 ( PascalFrancis/Curation ); précédent : 004796; suivant : 004798

MODELING KEPLER OBSERVATIONS OF SOLAR-LIKE OSCILLATIONS IN THE RED GIANT STAR HD 186355

Auteurs : C. Jiang [République populaire de Chine] ; B. W. Jiang [République populaire de Chine] ; J. Christensen-Dalsgaard [Danemark] ; T. R. Bedding [Australie] ; D. Stello [Australie] ; D. Huber [Australie] ; S. Frandsen [Danemark] ; H. Kjeldsen [Danemark] ; C. Karoff [Danemark] ; B. Mosser [France] ; P. Demarque [États-Unis] ; M. N. Fanelli [États-Unis] ; K. Kinemuchi [États-Unis] ; F. Mullally [États-Unis]

Source :

RBID : Pascal:12-0025843

Descripteurs français

English descriptors

Abstract

We have analyzed oscillations of the red giant star HD 186355 observed by the NASA Kepler satellite. The data consist of the first five quarters of science operations of Kepler, which cover about 13 months. The high-precision time-series data allow us to accurately extract the oscillation frequencies from the power spectrum. We find that the frequency of the maximum oscillation power, νmax, and the mean large frequency separation, Δν, are around 106 and 9.4 μHz, respectively. A regular pattern of radial and non-radial oscillation modes is identified by stacking the power spectra in an echelle diagram. We use the scaling relations of Δν and νmax to estimate the preliminary asteroseismic mass, which is confirmed with the modeling result (M = 1.45 ± 0.05 M◦.) using the Yale Rotating stellar Evolution Code (YREC7). In addition, we constrain the effective temperature, luminosity, and radius from comparisons between observational constraints and models. A number of mixed l = 1 modes are also detected and taken into account in our model comparisons. We find a mean observational period spacing for these mixed modes of about 58 s, suggesting that this red giant branch star is in the shell hydrogen-burning phase.
pA  
A01 01  1    @0 0004-637X
A02 01      @0 ASJOAB
A03   1    @0 Astrophys. j.
A05       @2 742
A06       @2 2 @3 p. 1
A08 01  1  ENG  @1 MODELING KEPLER OBSERVATIONS OF SOLAR-LIKE OSCILLATIONS IN THE RED GIANT STAR HD 186355
A11 01  1    @1 JIANG (C.)
A11 02  1    @1 JIANG (B. W.)
A11 03  1    @1 CHRISTENSEN-DALSGAARD (J.)
A11 04  1    @1 BEDDING (T. R.)
A11 05  1    @1 STELLO (D.)
A11 06  1    @1 HUBER (D.)
A11 07  1    @1 FRANDSEN (S.)
A11 08  1    @1 KJELDSEN (H.)
A11 09  1    @1 KAROFF (C.)
A11 10  1    @1 MOSSER (B.)
A11 11  1    @1 DEMARQUE (P.)
A11 12  1    @1 FANELLI (M. N.)
A11 13  1    @1 KINEMUCHI (K.)
A11 14  1    @1 MULLALLY (F.)
A14 01      @1 Department of Astronomy, Beijing Normal University @2 Beijing 100875 @3 CHN @Z 1 aut. @Z 2 aut.
A14 02      @1 Department of Physics and Astronomy, Aarhus University @2 8000 Aarhus C @3 DNK @Z 3 aut. @Z 7 aut. @Z 8 aut. @Z 9 aut.
A14 03      @1 Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney @2 Sydney, NSW 2006 @3 AUS @Z 4 aut. @Z 5 aut. @Z 6 aut.
A14 04      @1 LESIA, CNRS, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris @2 92195 Meudon @3 FRA @Z 10 aut.
A14 05      @1 Department of Astronomy, Yale University @2 New Haven, CT 06520-8101 @3 USA @Z 11 aut.
A14 06      @1 Bay Area Environmental Research Institute, NASA Ames Research Center @2 Moffett Field, CA 94035 @3 USA @Z 12 aut. @Z 13 aut.
A14 07      @1 SETI Institute, NASA Ames Research Center @2 Moffett Field, CA 94035 @3 USA @Z 14 aut.
A20       @2 120.1-120.7
A21       @1 2011
A23 01      @0 ENG
A43 01      @1 INIST @2 512 @5 354000505927740600
A44       @0 0000 @1 © 2012 INIST-CNRS. All rights reserved.
A45       @0 3/4 p.
A47 01  1    @0 12-0025843
A60       @1 P
A61       @0 A
A64 01  1    @0 The Astrophysical journal
A66 01      @0 GBR
C01 01    ENG  @0 We have analyzed oscillations of the red giant star HD 186355 observed by the NASA Kepler satellite. The data consist of the first five quarters of science operations of Kepler, which cover about 13 months. The high-precision time-series data allow us to accurately extract the oscillation frequencies from the power spectrum. We find that the frequency of the maximum oscillation power, νmax, and the mean large frequency separation, Δν, are around 106 and 9.4 μHz, respectively. A regular pattern of radial and non-radial oscillation modes is identified by stacking the power spectra in an echelle diagram. We use the scaling relations of Δν and νmax to estimate the preliminary asteroseismic mass, which is confirmed with the modeling result (M = 1.45 ± 0.05 M◦.) using the Yale Rotating stellar Evolution Code (YREC7). In addition, we constrain the effective temperature, luminosity, and radius from comparisons between observational constraints and models. A number of mixed l = 1 modes are also detected and taken into account in our model comparisons. We find a mean observational period spacing for these mixed modes of about 58 s, suggesting that this red giant branch star is in the shell hydrogen-burning phase.
C02 01  3    @0 001E03
C03 01  3  FRE  @0 Modélisation @5 26
C03 01  3  ENG  @0 Modelling @5 26
C03 02  3  FRE  @0 Etoile rouge @5 27
C03 02  3  ENG  @0 Red stars @5 27
C03 03  3  FRE  @0 Géante rouge @5 28
C03 03  3  ENG  @0 Red giant stars @5 28
C03 04  3  FRE  @0 Etoile géante @5 29
C03 04  3  ENG  @0 Giant stars @5 29
C03 05  X  FRE  @0 Satellite Kepler @5 30
C03 05  X  ENG  @0 Kepler satellite @5 30
C03 05  X  SPA  @0 Satélite Kepler @5 30
C03 06  3  FRE  @0 Série temporelle @5 31
C03 06  3  ENG  @0 Time series @5 31
C03 07  X  FRE  @0 Fréquence oscillation @5 32
C03 07  X  ENG  @0 Oscillation frequency @5 32
C03 07  X  SPA  @0 Frecuencia oscilación @5 32
C03 08  3  FRE  @0 Spectre puissance @5 33
C03 08  3  ENG  @0 Power spectra @5 33
C03 09  3  FRE  @0 Mode oscillation @5 34
C03 09  3  ENG  @0 Oscillation modes @5 34
C03 10  3  FRE  @0 Evolution stellaire @5 35
C03 10  3  ENG  @0 Stellar evolution @5 35
C03 11  3  FRE  @0 Température effective @5 36
C03 11  3  ENG  @0 Effective temperature @5 36
C03 12  3  FRE  @0 Luminosité @5 37
C03 12  3  ENG  @0 Luminosity @5 37
C03 13  X  FRE  @0 Modèle @5 38
C03 13  X  ENG  @0 Models @5 38
C03 13  X  SPA  @0 Modelo @5 38
C03 14  3  FRE  @0 Combustion hydrogène @5 39
C03 14  3  ENG  @0 Hydrogen burning @5 39
C03 15  3  FRE  @0 Analyse donnée @5 40
C03 15  3  ENG  @0 Data analysis @5 40
C03 16  X  FRE  @0 Etoile type solaire @5 41
C03 16  X  ENG  @0 Solar type star @5 41
C03 16  X  SPA  @0 Estrella tipo solar @5 41
N21       @1 009
N44 01      @1 OTO
N82       @1 OTO

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Le document en format XML

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<term>Data analysis</term>
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<term>Kepler satellite</term>
<term>Luminosity</term>
<term>Modelling</term>
<term>Models</term>
<term>Oscillation frequency</term>
<term>Oscillation modes</term>
<term>Power spectra</term>
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<div type="abstract" xml:lang="en">We have analyzed oscillations of the red giant star HD 186355 observed by the NASA Kepler satellite. The data consist of the first five quarters of science operations of Kepler, which cover about 13 months. The high-precision time-series data allow us to accurately extract the oscillation frequencies from the power spectrum. We find that the frequency of the maximum oscillation power, ν
<sub>max</sub>
, and the mean large frequency separation, Δν, are around 106 and 9.4 μHz, respectively. A regular pattern of radial and non-radial oscillation modes is identified by stacking the power spectra in an echelle diagram. We use the scaling relations of Δν and ν
<sub>max</sub>
to estimate the preliminary asteroseismic mass, which is confirmed with the modeling result (M = 1.45 ± 0.05 M
<sub>◦.</sub>
) using the Yale Rotating stellar Evolution Code (YREC7). In addition, we constrain the effective temperature, luminosity, and radius from comparisons between observational constraints and models. A number of mixed l = 1 modes are also detected and taken into account in our model comparisons. We find a mean observational period spacing for these mixed modes of about 58 s, suggesting that this red giant branch star is in the shell hydrogen-burning phase.</div>
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<sub>max</sub>
, and the mean large frequency separation, Δν, are around 106 and 9.4 μHz, respectively. A regular pattern of radial and non-radial oscillation modes is identified by stacking the power spectra in an echelle diagram. We use the scaling relations of Δν and ν
<sub>max</sub>
to estimate the preliminary asteroseismic mass, which is confirmed with the modeling result (M = 1.45 ± 0.05 M
<sub>◦.</sub>
) using the Yale Rotating stellar Evolution Code (YREC7). In addition, we constrain the effective temperature, luminosity, and radius from comparisons between observational constraints and models. A number of mixed l = 1 modes are also detected and taken into account in our model comparisons. We find a mean observational period spacing for these mixed modes of about 58 s, suggesting that this red giant branch star is in the shell hydrogen-burning phase.</s0>
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