Bars and their Impact on Galaxy Evolution over the Last Eight Billion Years

过去八十亿年来金条及其对星系演化的影响

• 批准号: 0607748
• 负责人: Shardha Jogee
• 金额: $ 31.17万
• 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: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607748&HistoricalAwards=false
• 关键词: Bars; their; Impact; Galaxy; Evolution

Fresh evidence suggests that, over last eight billion years since redshift z~1, disk galaxies underwent a more quiescent evolution that was driven by minor mergers, tidally induced bar structures, and spontaneously induced bars. Recent studies have in fact demonstrated the abundance of bars out to z ~ 1. Thousands of galaxies drawn from the GEMS (Galaxy Evolution from Morphology and SEDs [Spectral Energy Distributions]) survey will make a large database, combining optical (Hubble Space Telescope, HST), infrared (Spitzer Space Telescope) and X-ray (Chandra X-Ray Observatory) data. The program is anticipated to deliver new results on the bar lifetime, the distribution of bar properties, and the impacts of bars on the structural properties (bulges and central mass concentrations), circumnuclear star formation, and central activity of their host galaxies. The program will provide a reference baseline for follow-up with the future Atacama Large Millimeter Array (ALMA), since it targets galaxies in the HST/Spitzer/Chandra Extended Deep Field South, a key legacy field for ALMA science.Through an outreach program named "Building a Bridge to High School Students", this project will provide opportunities for high-school students to learn about astronomy and research in workshops, in the classroom, via web-based resources, and via video conferences. It will influence hundreds of teachers and an estimated 21,500 high school students located all over Texas. Many of those impacted are minorities, particularly the growing Hispanic population.

新的证据表明，自红移Z〜1以来，磁盘星系经历了更加静止的进化，这是由次要合并，潮汐诱导的棒结构和自发诱导的棒驱动的。实际上，最近的研究表明，从宝石中得出的数千个星系（从形态学和SEDS [频谱能量分布]）的调查中，大量的条形图将成为一个大数据库，结合了光学（Hubble太空望远镜，HST，HST），Indrared（Spitzer Space Telescope）和X-RAY（Chandra x-ray x-ray）。预计该计划将在杠铃寿命，条形质的分布以及条形对结构特性（凸起和中央质量浓度），透明恒星形成以及宿主星系的中心活性上产生新的结果。 The program will provide a reference baseline for follow-up with the future Atacama Large Millimeter Array (ALMA), since it targets galaxies in the HST/Spitzer/Chandra Extended Deep Field South, a key legacy field for ALMA science.Through an outreach program named "Building a Bridge to High School Students", this project will provide opportunities for high-school students to learn about astronomy and research in workshops, in the classroom, via web-based resources, and via video会议。它将影响数百名教师，估计有21,500名位于德克萨斯州的高中学生。受影响的许多是少数民族，尤其是西班牙裔人口不断增长。