A Survey of Circumstellar Disks and Young Stars with Adaptive Optics

利用自适应光学对星周盘和年轻恒星进行的调查

• 批准号: 9731576
• 负责人: Alan Tokunaga
• 金额: $ 27.31万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-01 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9731576&HistoricalAwards=false
• 关键词: Survey; Circumstellar; Disks; Young; Stars

Close, Laird University of Hawaii Manoa AST 97-31576 Dr. Close and co-PI's will study the circumstellar disks around young stars in isolated dark clouds and cluster environments. They will use the new adaptive optics system developed at the University of Hawaii for their observations, achieving diffraction-limited images in the infrared. Their observational program includes a variety of young stellar objects to sample a range of environments : T Tauri stars in the Taurus-Auriga dark cloud, massive young Herbig Ae/Be stars, and nearby OB associations. Observations that detect disks (estimated to be roughly 50%) will permit determinations of the disk age, mass, and accretion rates. They will also model the scattered light disk images to place constraints on the nature of the dust. Their ultimate goal is to use a combination of direct imaging followed by modeling to elucidate the processes by which stars and their planetary systems condense out of the dusty cores of molecular clouds.

Close，夏威夷莱尔德大学马诺阿分校 AST 97-31576 Close 博士和联合首席研究员将研究孤立的暗云和星团环境中年轻恒星周围的星周盘。 他们将使用夏威夷大学开发的新型自适应光学系统进行观测，从而获得红外衍射极限图像。 他们的观测计划包括对一系列环境进行采样的各种年轻恒星天体：金牛座-御夫座暗云中的金牛座 T 星、巨大的年轻赫比格 Ae/Be 星以及附近的 OB 星团。 检测盘的观测（估计大约为 50%）将允许确定盘的年龄、质量和吸积率。 他们还将对散射光盘图像进行建模，以对尘埃的性质进行限制。 他们的最终目标是结合使用直接成像和建模来阐明恒星及其行星系统从分子云的尘埃核心中凝结出来的过程。