Collaborative Research: Dark Matter in Galaxy Halos

合作研究：星系晕中的暗物质

• 批准号: 1616710
• 负责人: Aaron Romanowsky
• 金额: $ 10.27万
• 依托单位: San Jose State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-15 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1616710&HistoricalAwards=false
• 关键词: Collaborative; Research; Dark; Matter; Galaxy

The team will investigate the enigmatic "dark matter" in nearby galaxies. Dark matter does not radiate but its gravity tugs at the stars in a galaxy. Observations of such tracer stars provide clues about the dark matter. The team will use forefront facilities to study the starlight at optical wavelengths. They will focus on the faint outskirts of giant galaxies and on some just-discovered dwarf galaxies. The team will compare their observations to simulations of the dark matter in these diverse -- thus challenging -- settings. Senior team members will train junior members recruited from underrepresented groups. The team will continue its successful partnership with Science Buddies, an on-line resource for increasing K-12 science literacy.For the giant early-type galaxies, the team will use chemodynamics to map out their dark matter distributions and to study their assembly histories. For the dwarf ultra-diffuse galaxies, the team will use spectroscopy to study their dark matter distributions and their star formation histories.

该团队将调查附近星系中神秘的“暗物质”。暗物质不会辐射，但其引力会对星系中的恒星产生拉力。对这种示踪恒星的观察提供了关于暗物质的线索。该团队将使用最前沿的设备来研究光学波长的星光。他们将聚焦于巨型星系昏暗的外围，以及一些刚刚发现的矮星系。研究小组将把他们的观测结果与暗物质在这些不同环境中的模拟结果进行比较，从而形成具有挑战性的环境。高级团队成员将培训从代表性不足的群体中招募的初级成员。该团队将继续其与科学伙伴的成功合作关系，这是一个提高K-12科学素养的在线资源。对于巨大的早期类型星系，该团队将使用化学动力学来绘制它们的暗物质分布图，并研究它们的组装历史。对于矮小的超扩散星系，该团队将使用光谱学来研究它们的暗物质分布和恒星形成历史。