Spectroscopic Analysis of Objects with non-Spherical Envelopes

非球形包络物体的光谱分析

• 批准号: 0507328
• 负责人: Desmond Hillier
• 金额: $ 36.12万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0507328&HistoricalAwards=false
• 关键词: Spectroscopic; Analysis; Objects; non; Spherical

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.

AST-0507328匹兹堡大学Desmond Hillier具有非球形包络的物体的光谱分析摘要将继续开发一种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重要的物体的传输。这些天体(双星、新星、超新星、Be星、T-Tauri星等)已经从地面和空间广泛观测到，这一编码将提供丰度和物理参数的重要诊断工具。为此，计划开展几项活动以进一步改进和推广该计划：1)改进当前的数值技术以提高速度和精度；2)在并行环境中实施代码(探索各种可能的并行化路线)；以及3)将代码应用于真实的天体物理对象(特别是恒星、快速旋转的热星和发光的蓝色变星)，作为测试和提取有用的科学结果的方法。这是一个学生很少的地区，尽管它在整个天文学中都很重要。最终的代码将向公众发布。