A Mid-IR Study of the Disks & Envelopes of Pre-Main-Sequence, Intermediate-Mass Stars

磁盘的中红外研究

• 批准号: 9618348
• 负责人: Charles Telesco
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9618348&HistoricalAwards=false
• 关键词: Mid; IR; Study; Disks; &amp

Telesco, Charles AST 96-18348 Dr. Telesco will carry out an observational study into the spatial and spectral properties of the environments of pre-main-sequence, intermediate mass stars. His study will utilize a new infrared imager/spectrometer (OSCIR), developed by the PI and colleagues, to trace in detail the spatial distributions of dust throughout the environments of Herbig Ae/Be stars (those pre-main- sequence stars with masses of 2 to 10 solar masses) to determine how much matter is in the form of circumstellar disks or stellar envelopes. Spectroscopy of silicate particles in the stellar environments may provide insight into the temperature history of the dust particles. By probing the environments of these intermediate mass stars in the infrared, and characterizing the properties of dust particles and the frequency of occurrence of circumstellar disks, Dr. Telesco's work will provide insight into the earliest stages of stellar evolution and, potentially, the formation of planetary systems. ***

Telesco，Charles AST 96-18348 Telesco博士将对这颗行星的空间和光谱特性进行观察研究。 主序前中等质量恒星的环境。 他的研究将利用一种新的 红外成像仪/光谱仪（OSCIR），由PI和同事开发，详细跟踪 尘埃在赫比格Ae/Be星（质量为2到10个太阳质量的前主序星）环境中的空间分布，以确定有多少物质以这种形式存在 星周盘或恒星外壳的结构 恒星中硅酸盐粒子的光谱学 环境可以提供对灰尘颗粒的温度历史的洞察。 通过探测 这些中等质量恒星在红外线的环境，并表征 尘埃颗粒的性质和拱星盘出现的频率，特莱斯科博士的 这项工作将提供对恒星演化最早阶段的深入了解， 行星系统的形成。 ***