Asteroseismology of KIC 7107778: a binary comprising almost identical subgiants
Asteroseismology of KIC 7107778: a binary comprising almost identical subgiants
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KIC 7107778 的星震学：由几乎相同的亚巨星组成的双星
DOI：
10.1093/mnras/sty222
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发表时间：
2018-01
影响因子：
4.8
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Li Yaguang;Bedding Timothy R.;Li T;a;Bi Shaolan;Murphy Simon J.;et al.
我们分析一个星震双星系统：KIC 7107778，这是一个非食、未分辨的目标，其两个组成部分都有类太阳振荡。我们使用跨越近两年的开普勒短周期时间序列来获取功率谱。振荡……
We analyze an asteroseismic binary system: KIC 7107778, a non-eclipsing, unresolved target, with solar-like oscillations in both components. We used \emph{Kepler} short cadence time series spanning nearly two years to obtain the power spectrum. Oscillation mode parameters were determined using Bayesian inference and a nested sampling Monte Carlo algorithm with the \texttt{DIAMONDS} package. The power profiles of the two components fully overlap, indicating their close similarity. We modelled the two stars with \texttt{MESA} and calculated oscillation frequencies with \texttt{GYRE}. Stellar fundamental parameters (mass, radius and age) were estimated by grid modelling with atmospheric parameters and the oscillation frequencies of $l=0,2$ modes as constraints. Most $l=1$ mixed modes were identified with models searched using a bisection method. Stellar parameters for the two sub-giant stars are: $M_A=1.42\pm0.06$ $M_{\astrosun}$, $M_B=1.39\pm0.03$ $M_{\astrosun}$, $R_A=2.93\pm0.05$ $R_{\astrosun}$, $R_B=2.76\pm0.04$ $R_{\astrosun}$, $t_A=3.32\pm0.54$ Gyr and $t_B=3.51\pm0.33$ Gyr. The mass difference of the system is $\sim$1\%. The results confirm their simultaneous birth and evolution, as is expected from binary formation. KIC 7107778 comprises almost identical twins, and is the first asteroseismic sub-giant binary to be detected.
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影响因子：
6.5
作者：
T. Kallinger;J. Ridder;S. Hekker;S. Mathur;S. Mathur;B. Mosser;M. Gruberbauer;M. Gruberbauer;R. García;C. Karoff;J. Ballot;J. Ballot
通讯作者：
T. Kallinger;J. Ridder;S. Hekker;S. Mathur;S. Mathur;B. Mosser;M. Gruberbauer;M. Gruberbauer;R. García;C. Karoff;J. Ballot;J. Ballot
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
F. Bouchy;F. Carrier
通讯作者：
F. Bouchy;F. Carrier
DOI：
10.1086/341894
发表时间：
2002-09
期刊：
The Astrophysical Journal
影响因子：
--
作者：
F. Rogers;A. Nayfonov
通讯作者：
F. Rogers;A. Nayfonov
影响因子：
6.5
作者：
C. Fabricius;U. Bastian;J. Portell;J. Castañeda;M. Davidson;N. Hambly;M. Clotet;M. Biermann;A. Mora;D. Busonero;A. Riva;A. Brown;R. Smart;U. Lammers;J. Torra;R. Drimmel;G. Gracia;W. Löffler;A. Spagna;L. Lindegren;S. Klioner;A. Andrei;N. Bach;L. Bramante;T. Brüsemeister;G. Busso;G. Busso;J. Carrasco;M. Gai;N. Garralda;J. J. González-Vidal-J.;R. Guerra;M. Hauser;S. Jordan;C. Jordi;H. Lenhardt;F. Mignard;R. Messineo;A. Mulone;I. Serraller;U. Stampa;P. Tanga;A. V. Elteren;W. V. Reeven;H. Voss;U. Abbas;W. Allasia;M. Altmann;M. Altmann;S. Antón;C. Barache;U. Becciani;J. Berthier;L. Bianchi;A. Bombrun;S. Bouquillon;G. Bourda;B. Bucciarelli;A. Butkevich;R. Buzzi;R. Cancelliere;T. Carlucci;P. Charlot;R. Collins;G. Comoretto;N. Cross;M. Crosta;F. Felice;A. Fienga;F. Figueras;E. Fraile;R. Geyer;J. Hernandez;D. Hobbs;W. Hofmann;S. Liao;E. Licata;M. Martino;P. McMillan;D. Michalik;R. Morbidelli;P. Parsons;M. Pecoraro;M. Ramos-Lerate;M. Sarasso;H. Siddiqui;I. Steele;H. Steidelmüller;F. Taris;A. Vecchiato;A. Abreu;Eduardo Anglada;S. Boudreault;S. Boudreault;M. Cropper;B. Holl;N. Cheek;C. Crowley;J. Fleitas;A. Hutton;J. Osinde;N. Rowell;E. Salguero;E. Utrilla;N. Blagorodnova;N. Blagorodnova;M. Soffel;J. Osorio;D. Vicente;J. Cambras;H. Bernstein
通讯作者：
C. Fabricius;U. Bastian;J. Portell;J. Castañeda;M. Davidson;N. Hambly;M. Clotet;M. Biermann;A. Mora;D. Busonero;A. Riva;A. Brown;R. Smart;U. Lammers;J. Torra;R. Drimmel;G. Gracia;W. Löffler;A. Spagna;L. Lindegren;S. Klioner;A. Andrei;N. Bach;L. Bramante;T. Brüsemeister;G. Busso;G. Busso;J. Carrasco;M. Gai;N. Garralda;J. J. González-Vidal-J.;R. Guerra;M. Hauser;S. Jordan;C. Jordi;H. Lenhardt;F. Mignard;R. Messineo;A. Mulone;I. Serraller;U. Stampa;P. Tanga;A. V. Elteren;W. V. Reeven;H. Voss;U. Abbas;W. Allasia;M. Altmann;M. Altmann;S. Antón;C. Barache;U. Becciani;J. Berthier;L. Bianchi;A. Bombrun;S. Bouquillon;G. Bourda;B. Bucciarelli;A. Butkevich;R. Buzzi;R. Cancelliere;T. Carlucci;P. Charlot;R. Collins;G. Comoretto;N. Cross;M. Crosta;F. Felice;A. Fienga;F. Figueras;E. Fraile;R. Geyer;J. Hernandez;D. Hobbs;W. Hofmann;S. Liao;E. Licata;M. Martino;P. McMillan;D. Michalik;R. Morbidelli;P. Parsons;M. Pecoraro;M. Ramos-Lerate;M. Sarasso;H. Siddiqui;I. Steele;H. Steidelmüller;F. Taris;A. Vecchiato;A. Abreu;Eduardo Anglada;S. Boudreault;S. Boudreault;M. Cropper;B. Holl;N. Cheek;C. Crowley;J. Fleitas;A. Hutton;J. Osinde;N. Rowell;E. Salguero;E. Utrilla;N. Blagorodnova;N. Blagorodnova;M. Soffel;J. Osorio;D. Vicente;J. Cambras;H. Bernstein
DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
T. Metcalfe;W. Chaplin;T. Appourchaux;R. García;S. Basu;I. Brandao;O. Creevey;S. Deheuvels;G. Doğan;P. Eggenberger;C. Karoff;A. Miglio;D. Stello;M. Yıldız;Z. Celik;H. M. Antia;O. Benomar;R. Howe;C. Régulo;D. Salabert;T. Stahn;T. Bedding;G. Davies;Y. Elsworth;L. Gizon;S. Hekker;S. Mathur;B. Mosser;S. Bryson;M. Still;J. Christensen-Dalsgaard;R. Gilliland;S. Kawaler;H. Kjeldsen;K. Ibrahim;T. Klaus;J. Li
通讯作者：
T. Metcalfe;W. Chaplin;T. Appourchaux;R. García;S. Basu;I. Brandao;O. Creevey;S. Deheuvels;G. Doğan;P. Eggenberger;C. Karoff;A. Miglio;D. Stello;M. Yıldız;Z. Celik;H. M. Antia;O. Benomar;R. Howe;C. Régulo;D. Salabert;T. Stahn;T. Bedding;G. Davies;Y. Elsworth;L. Gizon;S. Hekker;S. Mathur;B. Mosser;S. Bryson;M. Still;J. Christensen-Dalsgaard;R. Gilliland;S. Kawaler;H. Kjeldsen;K. Ibrahim;T. Klaus;J. Li