新星V723 Cas的三维光电离模型
3D photoionization models of nova V723 Cas
摘要：
我们提出了建模和分析的喷出物的新星V723 Cas的空间分辨红外光谱数据的基础上，从OSIRIS，与LGSAO（自适应光学模块）。三维光电离模型包括观测到的壳层几何和由球形中心源和吸积盘组成的各向异性辐射场。我们的模拟表明，修订后的丰度$log(N_{Al}/N_{H})=-5.4$，$log(N_{Ca}/N_{H})=-6.4$和$log(N_{Si}/N_{H})=-4.7$的外壳。总喷出质量为$M_{shell}=1.1\times 10^{-5}$ $M_{\odot}$，中心源温度和亮度为$T=280,000$ $K$和$L=10^{38}$ $erg/s$。3D模型进行了比较，基本的1D模拟，以证明使用更现实的治疗，强调壳质量，丰度和表征的中心源的差异的重要性。V723 Cas是一颗氖新星的可能性和令人困惑的中心源特征进行了讨论。
英文摘要：
We present modeling and analysis of the ejecta of nova V723 Cas based on spatially resolved IR spectroscopic data from Keck-OSIRIS, with LGSAO (adaptive optics module). The 3D photoionization models include the shell geometry taken from the observations and an anisotropic radiation field, composed by a spherical central source and an accretion disk. Our simulations indicate revised abundances $log(N_{Al}/N_{H})=-5.4$, $log(N_{Ca}/N_{H})=-6.4$ and $log(N_{Si}/N_{H})=-4.7$ in the shell. The total ejected mass was found as $M_{shell}=1.1\times 10^{-5}$ $M_{\odot}$ and the central source temperature and luminosity are $T=280,000$ $K$ and $L=10^{38}$ $erg/s$. The 3D models are compared to basic 1D simulations to demonstrate the importance of using more realistic treatments, stressing the differences in the shell mass, abundances and characterization of the central source. The possibility of V723 Cas being a neon nova and the puzzling central source features found are discussed.
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