NSTARS:High-resolution spectroscopy of nearby stars

NSTARS：附近恒星的高分辨率光谱

• 批准号: 0086321
• 负责人: David Lambert
• 金额: $ 30.6万
• 依托单位: University of Texas at Austin
• 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: 2000-07-15 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086321&HistoricalAwards=false
• 关键词: NSTARS; resolution; spectroscopy; nearby; stars

AST-0086321Lambert, David"NStars: High-resolution Spectroscopy of Nearby Stars"Dr. Lambert is conducting a detailed study of absorption line asymmetries and wavelength shifts in the spectra of stars using realistic three-dimensional hydrodynamic simulations. He is working to quantify the effects of convective motions and the resulting surface irregularities on measurements of radial velocity, photocentric stability, chemical composition and other basic stellar parameter measurements so that the data on nearby stars can be corrected for these effects. Some of the ultra-high resolution spectra needed for this project are obtained at the University of Texas McDonald Observatory.Funding for this project was provided by the NSF Stellar Astronomy & Astrophysics (AST/SAA) program through the joint NSF/NASA "Nearby Stars (NStars)" initiative, and the NSF Mathematical & Physical Sciences Directorate Office of Multidisciplinary Activities (MPS/OMA).***

AST-0086321 Lambert，大卫“NStars：邻近恒星的高分辨率光谱学“Lambert博士正在使用逼真的三维流体动力学模拟对恒星光谱中的吸收线不对称性和波长偏移进行详细研究。 他正在量化对流运动和由此产生的表面不规则性对径向速度、光心稳定性、化学成分和其他基本恒星参数测量的影响，以便对附近恒星的数据进行校正。 该项目所需的一些超高分辨率光谱是在德克萨斯大学麦克唐纳天文台获得的。该项目的资金由NSF恒星天文学天体物理学（AST/SAA）计划通过NSF/NASA联合“邻近恒星（NStars）”倡议和NSF数学物理科学理事会多学科活动办公室（MPS/OMA）提供。*