Spectroscopic Analysis of Objects with non-Spherical Envelopes

AST-0507328 Desmond Hillier爱丁堡大学非球面包络物体的光谱分析摘要将继续开发一个复杂的多维非局部热力学平衡程序，用于辐射通过几何形状很重要的物体的传输。这类天体（双星、新星、超新星、Be星、金牛T星等）已经从地面和空间进行了广泛的观测，该代码将提供一个重要的丰度和物理参数诊断工具。为了达到这个目的，计划进行几项活动来进一步改进和推广程序：1）改进当前的数值技术，以提高速度和精度; 2）在并行环境中实现代码（探索各种可能的并行化途径）;以及3）将代码应用于真实的天体物理对象（特别是Be星，快速旋转的热星和明亮的蓝色变量）作为测试方法，以及提取有用的科学结果。培训和支持博士后研究员在建模辐射传输。这是一个几乎没有学生的领域，尽管它在整个天文学中很重要。最终的代码将向公众发布。

AST-0507328Desmond HillierUniversity of PittsburghSpectroscopic Analysis of Objects with non-Spherical EnvelopesABSTRACTThe development of a sophisticated multi-dimensional non-local thermodynamic equilibrium codefor the transfer of radiation through objects where geometry is important will be continued. Suchobjects (binary stars, novae, supernovae, Be stars, T Tauri stars, etc.) have been extensivelyobserved from both the ground and space and this code will provide an important diagnostic tool ofabundances and physical parameters. Towards this end, several activities are planned to furtherimprove and generalize the program: 1) a refinement of the current numerical techniques for greaterspeed and accuracy; 2) the implementation of the code in a parallel environment (exploring variouspossible parallelization routes); and 3) applying the code to real astrophysical objects (specificallyBe stars, rapidly rotating hot stars, and luminous blue variables) as a method of testing as well asextracting useful scientific results.The training and support for a postdoctoral fellow in modeling radiative transfer is included. This isan area with few students despite its importance throughout astronomy.The final code will be released to the public.