CAREER: Galaxy Evolution in the Cosmic Web: RESOLVEing the Missing and Invisible

职业：宇宙网中的星系演化：解决失踪和看不见的问题

• 批准号: 0955368
• 负责人: Sheila Kannappan
• 金额: $ 79.51万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0955368&HistoricalAwards=false
• 关键词: CAREER; Galaxy; Evolution; Cosmic; Web

Dr. Kannappan proposes to lead and carry out a project that will advance our understanding of cosmology by investigating the 'missing baryons' problem, so named since most of the normal baryonic matter predicted from early-universe cosmology is not seen at the present epoch. She will investigate this problem by conducting the RESOLVE (Resolved Spectroscopy Of a Local VolumE) survey. RESOLVE will produce 2-D optical and radio spectroscopy of a carefully selected sample of approximately 1500 galaxies in the nearby cosmic web. When the survey is completed it will be the first to:- Directly determine the fundamental distribution of internal velocities within the sample, i.e. the 'velocity function' of the sample- Perform an analysis of disk growth and survival in relation to merging and cosmic structure- Put a new type of constraint on the distribution of missing baryons through a self-consistent mass census which will be analyzed in conjunction with star formation patterns and numerical simulationsDr. Kannappan will use the data from RESOLVE to train a new generation of scientists in multiple areas of astronomy including: spectroscopy, radio astronomy, and survey data handling. RESOLVE data will be made available on the web where it will be used in data-driven activities that are geared toward projects for high school and undergraduate students. Additionally, Dr. Kannappan will develop an astronomy curriculum that is aligned to the North Carolina science standards. This work is in collaboration with current teachers and is based on her experience in the Teach for America program, a program that typically targets minority and/or low-income communities.

卡纳潘博士建议领导和实施一个项目，通过研究失踪重子问题来推进我们对宇宙学的理解。之所以这样命名，是因为早期宇宙宇宙学预测的大多数正常重子物质在当今时代是看不到的。她将通过进行RESOLE(局部卷的分辨光谱)调查来研究这个问题。Resolve将对附近宇宙网中精心挑选的约1500个星系样本进行二维光学和射电光谱分析。当调查完成时，它将是第一个：-直接确定样本内部速度的基本分布，即样本的‘速度函数’-执行与合并和宇宙结构有关的圆盘增长和生存分析-通过自洽的大规模普查对丢失重子的分布施加新型约束，这将与恒星形成模式和数值模拟相结合进行分析。Kannappan将使用Resolve的数据培训新一代天文学领域的科学家，包括：光谱学、射电天文学和测量数据处理。Resolve数据将在网络上提供，用于面向高中生和本科生的项目的数据驱动活动。此外，卡纳潘博士还将制定符合北卡罗来纳州科学标准的天文学课程。这项工作是与现任教师合作进行的，基于她在为美国而教计划中的经验，该计划主要针对少数族裔和/或低收入社区。