The Role of Neutral Hydrogen in Star Formation Processes in Dwarf Galaxies

中性氢在矮星系恒星形成过程中的作用

• 批准号: 0407051
• 负责人: Caroline Simpson
• 金额: --
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407051&HistoricalAwards=false
• 关键词: Role; Neutral; Hydrogen; Star; Formation

AST-0407051SimpsonDwarf galaxies, the most common type of galaxy in the Universe, are kinematically simple systems, which makes them ideal laboratories for studying how star formation occurs on local, rather than global, scales. This work will focus on characterizing the neutral hydrogen component of the interstellar medium in dwarf irregular galaxies, as part of a large multi-wavelength study headed by Dr Deidre Hunter of Lowell Observatory. To understand how dwarf galaxies form stars, it is essential to determine the location, morphology, and kinematics of their gas reservoirs, relative to regions of current and past star formation. High resolution interferometric data will be reduced, imaged, and analyzed, and used to constrain star formation models, as part of the overall project. This work is a collaboration between faculty at a minority (Hispanic) institution, and staff at a private observatory. The researcher will extend existing involvements with graduate and undergraduate students, and present public talks, often including material related to the project. Being actively involved in research enables a scientist to bring the excitement of discovery to the classroom and to the public.

矮星系是宇宙中最常见的星系类型，它们是运动学简单的系统，这使它们成为研究局部而非全局尺度上恒星形成过程的理想实验室。这项工作将侧重于描述矮不规则星系星际介质中的中性氢成分，作为洛厄尔天文台的Deidre Hunter博士领导的大型多波长研究的一部分。为了了解矮星系是如何形成恒星的，有必要确定其气藏的位置、形态和运动学，相对于当前和过去的恒星形成区域。作为整个项目的一部分，高分辨率干涉数据将被压缩、成像和分析，并用于约束恒星形成模型。这项工作是少数民族（西班牙裔）机构的教师和私人天文台的工作人员之间的合作。研究人员将扩大现有的研究生和本科生的参与，并发表公开演讲，通常包括与项目相关的材料。积极参与研究使科学家能够把发现的兴奋带给教室和公众。