Voids as Laboratories for Galaxy Formation

空洞作为星系形成的实验室

• 批准号: 0507463
• 负责人: Michael Vogeley
• 金额: $ 8万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0507463&HistoricalAwards=false
• 关键词: Voids; Laboratories; Galaxy; Formation

AST-0507463VogeleyThe properties and distribution of void galaxies provide critical tests of galaxy formation models, complementary to observations of galaxies in denser regions. Preliminary analyses indicate significant environmental dependences for star formation rate, luminosity, color, and morphology, possibly in conflict with the predictions of currently preferred (cold dark matter) models. A new sample, identified from the Sloan Digital Sky Survey and augmented with other archival data and proposed observations, will allow a detailed investigation of variations in galaxy properties, and of specific explanatory hypotheses. Statistical measures of voids will strongly constrain dark matter models. Clustering within voids will be studied for evidence of substructure. Special purpose simulations will be developed to probe the structure and dynamics of voids, and to help interpret the data.Broader impacts include community outreach, with a physics open house and demonstrations for high school students. University efforts will include new undergraduate and graduate courses, student mentoring, and the organization of local and international meetings.

AST-0507463 Vogeley空星系的性质和分布提供了星系形成模型的关键测试，补充了对致密区域星系的观测。 初步分析表明，星星的形成率，光度，颜色和形态的显着的环境依赖性，可能与目前首选的（冷暗物质）模型的预测相冲突。 一个新的样本，从斯隆数字巡天确定，并与其他档案数据和拟议的观测增强，将允许详细调查星系属性的变化，并具体的解释性假设。 空洞的统计测量将强烈地限制暗物质模型。 将研究空隙内的聚类，以获得子结构的证据。 将开发特殊用途的模拟来探测空洞的结构和动力学，并帮助解释数据。更广泛的影响包括社区推广，为高中生提供物理开放日和演示。 大学的努力将包括新的本科生和研究生课程、学生指导以及组织本地和国际会议。