On the use of the ratio of small to large separations in asteroseismic model fitting
On the use of the ratio of small to large separations in asteroseismic model fitting
复制标题
星震模型拟合中小距与大距比的应用
DOI:
10.1051/0004-6361/201321333
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发表时间:
2013
影响因子:
6.5
通讯作者:
Roxburgh I
中科院分区:
文献类型:
--
作者:
Roxburgh I
AimsWe aim to show that model fitting by searching for a best fit of observed and model separation ratios at the same radial ordersnis in principle incorrect, and to show that a correct procedure is to compare the model ratios interpolated to the observed frequencies.MethodsWe compare models with different interior structures and outer layers, relate the separation ratios to phase shift differences, conduct model fitting experiments using separation ratios, and relate phase shift differences to internal phase shifts.ResultsWe show that the separation ratios of stellar models with the same interior structure, but different outer layers, are not the same when compared at the same radial ordern, but are the same when evaluated at the same frequencies by interpolation. The separation ratios trace the phase shift differences as a function of frequency, not ofn, and it is the phase shift differences which are determined by the interior structure. We give examples from model fitting where the ratios at the samenvalues agree but the models have different interior structure, and where the ratios agree when interpolated to the same frequencies and the models have the same interior structure. The correct procedure is to compare observed ratios with model values interpolated to the observed frequencies.
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影响因子:
6.5
作者:
T. Appourchaux;W. Chaplin;R. García;M. Gruberbauer;G. Verner;H. M. Antia;O. Benomar;T. Campante;G. Davies;S. Deheuvels;R. Handberg;S. Hekker;R. Howe;C. R'egulo;D. Salabert;T. Bedding;T. White;J. Ballot;S. Mathur;V. S. Aguirre;Y. Elsworth;S. Basu;R. Gilliland;J. Christensen-Dalsgaard;H. Kjeldsen;K. Uddin;Martin C. Stumpe;T. Barclay
通讯作者:
T. Appourchaux;W. Chaplin;R. García;M. Gruberbauer;G. Verner;H. M. Antia;O. Benomar;T. Campante;G. Davies;S. Deheuvels;R. Handberg;S. Hekker;R. Howe;C. R'egulo;D. Salabert;T. Bedding;T. White;J. Ballot;S. Mathur;V. S. Aguirre;Y. Elsworth;S. Basu;R. Gilliland;J. Christensen-Dalsgaard;H. Kjeldsen;K. Uddin;Martin C. Stumpe;T. Barclay
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
R. Scuflaire;S. Théado;J. Montalban;A. Miglio;P. Bourge;M. Godart;A. Thoul;A. Noels
通讯作者:
A. Noels
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
I. Roxburgh;S. Vorontsov
通讯作者:
S. Vorontsov
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
R. Scuflaire;J. Montalbán;S. Théado;P.;A. Miglio;M. Godart;A. Thoul;A. Noels
通讯作者:
A. Noels
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
I. Roxburgh
通讯作者:
I. Roxburgh