标题： 天鹅环状星云中重元素的喷发分布 显示英文标题

标题： The Ejecta Distributions of the Heavy Elements in the Cygnus Loop

摘要： 我们利用来自\textit{朱雀}和\textit{XMM-Newton}观测台的 14 指向和 7 指向观测数据，分析了天鹅环的金属分布。光谱分析表明，所有光谱都可由双$kT_e$非平衡电离等离子体模型很好地拟合，这与早期观测结果一致。从高$kT_e$成分的最佳拟合参数中，我们计算了各种元素的发射度量，并展示了喷发成分的金属分布。我们发现 Si 和 Fe 的分布集中在几何中心西南方向朝向吹出区域。从最佳拟合参数中，我们还根据我们的视野以及金属中心半径为 25 弧分的金属富集区，估计了天鹅环的前身星质量。金属圈的结果与我们整个视场的结果相似，这表明了金属混合的存在。由此，我们估计前身恒星的质量为 12-15\MO 。 显示英文摘要

摘要： We analyzed the metal distribution of the Cygnus Loop using 14 and 7 pointings observation data obtained by the \textit{Suzaku} and the \textit{XMM-Newton} observatories. The spectral analysis shows that all the spectra are well fitted by the two-$kT_e$ non-equilibrium ionization plasma model as shown by the earlier observations. From the best-fit parameters of the high-$kT_e$ component, we calculated the emission measures about various elements and showed the metal distribution of the ejecta component. We found that the distributions of Si and Fe are centered at the southwest of the geometric center toward the blow-out region. From the best-fit parameters, we also estimated the progenitor mass of the Cygnus Loop from our field of view and the metal rich region with a radius of 25 arcmin from the metal center. The result from the metal circle is similar to that from our entire FOV, which suggests the mixing of the metal. From the results, we estimated the mass of the progenitor star at 12-15\MO.