Multi-Wavelength Long-Baseline Interferometric Study of Evolved Stars

Danchi博士将对演化恒星周围的尘埃和气体进行高角度分辨率的观测，其科学目标是提供100个恒星半径以外的星周区域物质的形态、运动学和物理条件的详细描述。该项目将利用加州大学伯克利分校的红外空间干涉仪，在8 - 12微米范围内提供非常高的空间分辨率观测，并在凯克望远镜上采用非冗余孔径掩蔽技术进行近红外观测。这些观测结果及其分析将提供演化恒星质量损失过程的信息。

Danchi, William AST-9731625 Dr. Danchi will carry out a program of high-angular resolution observations of dust and gas surrounding evolved stars, with the scientific goals of providing a detailed description of the morphology, kinematics, and physical conditions of material in the circumstellar regions out to 100 stellar radii away. The program will make use of the UC Berkeley Infrared Spatial Interferometer to provide very high spatial resolution observations at 8 - 12 microns, and a non-redundant aperture masking technique in the near-infrared on the Keck telescope. Results from these observations and their analysis will provide information on the process of mass loss in evolved stars.