Probing the Galaxy-Halo/Cosmic Web Interface and Galaxy Evolution

探索 Galaxy-Halo/Cosmic Web 界面和 Galaxy Evolution

• 批准号: 0708210
• 负责人: Christopher Churchill
• 金额: $ 28.57万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0708210&HistoricalAwards=false
• 关键词: Probing; Galaxy; Halo; Cosmic; Web

AST-0708210ChurchillThis project is a detailed study of the dynamic gaseous regions surrounding galaxies, in order to examine the combined role of intergalactic medium evolution and feedback from galaxies. Extended gaseous halos are the chemically enriched, multi-ionization phase, astrophysical laboratories harboring the physics of galaxy evolution, but existing simulations have known shortcomings, and there is a shortage of high quality data. Two complementary projects will (1) provide unprecedented detailed observational constraints on the extent, distribution, kinematics, and chemical and ionization conditions, of galactic halo gas, and (2) undertake an analysis of high-resolution simulations, both to interpret these data and to place constraints on various galaxy feedback recipes. The work will accumulate and analyze the highest quality quasar spectra and galaxy data from space and ground archives, as well as obtain additional critical data. Analysis of the simulations will create synthetic quasar absorption line spectroscopy to analyze in the same fashion as the observational data. Analysis of mock quasar spectra through cosmological simulation is a highly promising way to interpret the underlying temperature, density, and ionization structure of the halo/cosmic web interface, and the influence of galaxies on chemical enrichment.The project includes an innovative state-wide networked science course designed to encourage under-represented students from the state of New Mexico to pursue technical careers. The class will motivate students to cross cultural barriers and encourage cultural diversity in the growing space flight industry.

AST-0708210 Churchillthis Project是对星系围绕星系的动态气态区域的详细研究，以便研究星际培养基进化和星系中反馈的综合作用。 扩展的气态光环是化学丰富的多电离阶段，具有星系进化物理物理学的天体物理实验室，但现有的模拟已知缺点，并且缺乏高质量的数据。 （1）将在银河系晕气体的程度，分布，运动学以及化学和电离条件下提供前所未有的详细观察限制，以及（2）对高分辨率模拟进行分析，以解释这些数据并在各种星系反馈食谱上对这些数据作出约束。 这项工作将积累和分析来自太空和地面档案的最高质量的类星体光谱和星系数据，并获得其他关键数据。 对模拟的分析将创建合成的类星体吸收线光谱，以与观察数据相同的方式分析。 通过宇宙学模拟对模拟Quasar光谱进行分析是一种高度有希望的方法，可以解释光环/宇宙网络接口的基础温度，密度和电离结构，以及星系对化学丰富的影响。该项目包括一项创新的全球网络课程，旨在鼓励新墨西哥技术医生的领域不足的学生。 该课程将激励学生越过文化障碍，并鼓励在不断发展的太空飞行行业中的文化多样性。