A note on the use of surface offset corrections in asteroseismic model fitting
A note on the use of surface offset corrections in asteroseismic model fitting
复制标题
关于星震模型拟合中使用表面偏移校正的说明
DOI:
10.1051/0004-6361/201526177
复制
发表时间:
2015
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
We critically investigate the practice of adding a power-law surface offset correctionf(ν) to the frequencies of stellar models prior to seeking best fit models to an observed star. We show that surface layer independent indicators of the internal structure, phase shifts and separation ratios, are displaced in frequency byf(ν) and are therefore not the same as those of the model. Consequently such best fit models do not have exactly the same interior structure as the observed star. Using results on the star HD 177153 we show that the difference between observed and model frequencies for best fit models obtained using surface layer independent procedures have a wide range of different offsets which do not in general follow a Kjeldsen-like power law, and further that best fit models obtained using the offset correction procedure do not necessarily satisfy surface layer independent constraints on the internal structure.
登录
查看更多内容
影响因子:
6.5
作者:
I. Roxburgh
通讯作者:
I. Roxburgh
影响因子:
2.8
作者:
M. Lazrek;F. Baudin;L. Bertello;P. Boumier;J. Charra;D. Fierry;E. Fossat;A. Gabriel;Rafael A. García;B. Gelly;C. Gouiffès;G. Grec;P. Pallé;F. P. Hernández;C. Régulo;C. Renaud;J. Robillot;T. R. Cortés;S. Turck;R. Ulrich
通讯作者:
R. Ulrich
影响因子:
6.5
作者:
Roxburgh I
通讯作者:
Roxburgh I
影响因子:
6.5
作者:
I. Roxburgh
通讯作者:
I. Roxburgh