Disks surrounding massive stars

围绕大质量恒星的圆盘

• 批准号: 327266-2011
• 负责人: Jones, Carol
• 金额: $ 1.6万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571966
• 关键词: Disks; surrounding; massive; stars

Disk structures are ubiquitous within the observable universe. Galaxies produce new stars in the spiral arms of their disks, planets form through the disk-like material left over from star formation, and black holes are associated with disks. Disks are also found around young and old stars as well as in binary systems. Currently, my research focuses on disk material associated with massive stars in order to understand the process of disk formation and the influence that these systems have on their surroundings. Massive stars are an important source of both winds and ionizing radiation that affect their immediate environment as well as shape the evolution of their parent galaxy. I use detailed computer models to predict observables such as spectral lines, polarization, and spectral energy distributions for comparison with observational data from many different sources including interferometers, satellites and ground-based observatories over a wide range of wavelengths. These detailed comparisons place tight constraints on model input parameters and allow the physical conditions in the star/disk system to be determined. Ultimately, my findings regarding disks surrounding massive stars may be extended to further our understanding of other disk-like distributions. My use of new observational technologies, especially high-resolution interferometry, combined with increased computer capabilities and data storage, will allow me to make significant progress in expanding our knowledge of these disk-like regions.

圆盘结构在可观测的宇宙中无处不在。星系在其盘的旋臂中产生新的恒星，行星通过星星形成时留下的盘状物质形成，黑洞与盘有关。在年轻和年老的恒星周围以及双星系统中也可以发现双星。目前，我的研究重点是与大质量恒星相关的盘材料，以了解盘形成的过程以及这些系统对其周围环境的影响。大质量恒星是风和电离辐射的重要来源，影响着它们的周围环境，并塑造着它们的母星系的演化。 我使用详细的计算机模型来预测观测数据，如光谱线，偏振和光谱能量分布，与来自许多不同来源的观测数据进行比较，包括干涉仪，卫星和地面观测站在很宽的波长范围内。这些详细的比较严格限制模型的输入参数，并允许在星星/磁盘系统的物理条件被确定。 最终，我关于大质量恒星周围圆盘的发现可能会扩展到我们对其他圆盘状分布的理解。我使用新的观测技术，特别是高分辨率干涉测量法，再加上计算机能力和数据存储的提高，将使我能够在扩大我们对这些盘状区域的了解方面取得重大进展。