Spectroscopic Analysis of Objects with non-Spherical Envelopes

非球形包络物体的光谱分析

• 批准号: 9987390
• 负责人: Desmond Hillier
• 金额: $ 30.9万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-15 至 2004-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987390&HistoricalAwards=false
• 关键词: Spectroscopic; Analysis; Objects; non; Spherical

ABSTRACTHillier, Desmond"Spectroscopic Analysis of Objects with non-Spherical Envelopes"AST-9987390In this project a non-equilibrium multi-dimensional program will be created to model the spectra of astrophysical objects with non-spherical geometry, such as Be stars, T Tauri stars, Wolf-Rayet stars, binary stars, novae, supernovae and quasars. The code developed in this project will provide an important diagnostic tool to analyze the data collected with ground- and space-based telescopes at non-optical wavelengths. Such multi-wavelength observations are essential to sample different physical regions of stellar envelopes from which the geometry and structure can be reconstructed. Initial work will concentrate on the development of general models with axial symmetry, outflow and rotation of circumstellar material. The effects of polarization and more complicated geometry will be incorporated in the later stages of the project.Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA

本项目将建立一个非平衡多维程序，模拟具有非球形包络的天体的光谱，如Be星、金牛T星、Wolf-Rayet星、双星、新星、超新星和类星体。 该项目开发的代码将为分析地面和空间望远镜在非光学波长收集的数据提供重要的诊断工具。 这种多波长观测对于采样恒星包层的不同物理区域至关重要，从中可以重建几何和结构。 初期的工作将集中于发展具有轴对称性、外流和星周物质旋转的一般模型。 偏振效应和更复杂的几何形状将在项目的后期阶段被纳入，该项目的资金由美国国家科学基金会的恒星天文天体物理学计划（AST/SAA）提供