论文标题
应用筛选的库仑潜力适合DAV Star HS 0507+0434b
Application of a screened Coulomb potential in fitting the DAV star HS 0507+0434B
论文作者
论文摘要
我们使用\ texttt {wdec}来进化DAV星模型的网格，该网格采用了具有纯和筛选的库仑电势效应的元素扩散方案。核心成分是源自\ texttt {mesa}的热核燃烧结果。 \ texttt {Mesa}得出本工作中使用的WDEC版本无法容纳的组成概要文件（最值得注意的是模型核心中存在氦气）。根据旋转分裂理论，Fu等人。基于206 \，H光度数据确定了DAV星HS 0507+0434b的6个三重态。 DAV Star型号的网格用于适合6个可靠的$ M $ = 0模式。在采用筛选的库仑电位时，我们获得了最佳拟合模型（$ m _ {\ rm he}/m _ {\ rm *} $）= -3.0，log（$ m _ {\ rm h}/m _ {\ rm h}/m _ {\ rm *} $ $ m _ {\ rm *} $ = 0.625 \，$ m _ {\ odot} $，log $ g $ = 8.066和$σ_{rms} $ = 2.08 \，s。与采用纯库仑电势相比，$σ_{rms} $的值提高了34 \％。该研究可能为研究模式陷阱属性提供新方法。
We use \texttt{WDEC} to evolve grids of DAV star models adopting the element diffusion scheme with pure and screened Coulomb potential effect. The core compositions are thermonuclear burning results which are derived from \texttt{MESA}. \texttt{MESA} yields composition profiles that the version of WDEC used in this work could not accommodate (most notably the presence of helium in the core of the model). According to the theory of rotational splitting, Fu et al. identified 6 triplets for a DAV star HS 0507+0434B based on 206\,h photometric data. The grids of DAV star models are used to fit the 6 reliable $m$ = 0 modes. When adopting the screened Coulomb potential, we obtain a best fitting model of log($M_{\rm He}/M_{\rm *}$) = -3.0, log($M_{\rm H}/M_{\rm *}$) = -6.1, $T_{\rm eff}$ = 11790\,K, $M_{\rm *}$ = 0.625\,$M_{\odot}$, log$g$ = 8.066, and $σ_{RMS}$ = 2.08\,s. Compared with adopting the pure Coulomb potential, the value of $σ_{RMS}$ is improved by 34\%. The study may provide a new method for the research of mode trapping properties.
