Exploring the Solar Neighborhood with the GALEX All Sky Survey

通过 GALEX 全天巡天探索太阳邻域

• 批准号: 1517791
• 负责人: Graeme Smith
• 金额: $ 9.79万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-15 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1517791&HistoricalAwards=false
• 关键词: Exploring; Solar; Neighborhood; GALEX; Sky

The history of element creation in our Milky Way galaxy is preserved in dwarf stars. By observing the nearby stars at ultraviolet (UV) wavelengths the investigators will unravel that history. The investigators will use the GALEX satellite images to measure the properties of the relatively faint dwarf stars in the solar neighborhood. These observations, made at UV wavelengths, complement observations made at the optical and infrared wavelengths with ground based telescopes. The investigators will also advance our knowledge of nearby stars, with potential impacts across other fields of astronomy. The research activity is designed to help train a young scientist and the project is defined as a set of projects suitable for high school students. The investigator's team will bring underrepresented minorities into their research, expanding participation in basic science.The investigators will measure the UV-based colors of stars and calibrate the colors to estimate stellar metallicity and stellar age. Their research will aid in understanding the formation and age of stars in our galaxy. They will combine measurements of dwarf star colors from previous optical surveys, such as the Sloan Digital Sky Survey and the Geneva-Copenhagen Survey, to determine the age-metallicity relations and age-versus-trajectory for stars in the Milky Way.

我们银河系元素创造的历史保存在矮星中。通过在紫外线(UV)波长下观察附近的恒星，研究人员将揭开这段历史。研究人员将使用GALEX卫星图像来测量太阳附近相对较暗的矮星的性质。这些观测是在紫外线波段进行的，是对地面望远镜在光学和红外波段的观测的补充。研究人员还将增进我们对附近恒星的了解，这可能会对天文学的其他领域产生影响。该研究活动旨在帮助培养一名年轻的科学家，该项目被定义为一套适合高中生的项目。研究人员的团队将把代表性不足的少数族裔纳入他们的研究，扩大对基础科学的参与。研究人员将测量恒星基于紫外线的颜色，并校准颜色以估计恒星的金属丰度和恒星年龄。他们的研究将有助于理解我们银河系中恒星的形成和年龄。他们将结合以前光学调查中对矮星颜色的测量，如斯隆数字天空调查和日内瓦-哥本哈根调查，以确定银河系恒星的年龄-金属丰度关系和年龄-轨迹。