U.S.-Netherlands Cooperative Research: Metal Abundances in Extragalactic Tails and Bridges

美国-荷兰合作研究：河外尾部和桥梁中的金属丰度

• 批准号: 9908542
• 负责人: Beverly Smith
• 金额: $ 0.89万
• 依托单位: East Tennessee State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908542&HistoricalAwards=false
• 关键词: U.S.; Netherlands; Cooperative; Research; Metal

9908542SmithThis two-year award is for U.S.-Netherlands cooperative research between Beverly Smith of East Tennessee State University and James Higdon and Jan van der Hulst of Kapetyn Institute in Groningen, The Netherlands, for a comprehensive study of a sample of fifteen extragalactic tails and bridges to determine how metal abundances, star formation rates and efficiencies vary with gas surface density, interaction parameters and timescale, and the stellar and gaseous morphology of the structure. The proposed observations will be made with the William Hershel 4.5m telescope (operated by The Netherlands and the UK), and 0.9 telescope operated by the Southeastern Association for Research in Astronomy (SARA), and the National Radio Astronomy Observatory 12m millimeter telescope and Very Large Array. The observational study will be done in parallel with hydrodynamical modeling of the individual systems in the sample to better define the parameters of the interactions and help determine the conditions needed to trigger star formation in tails and bridges. The U.S. investigator brings to this collaboration access to the SARA 0.9 telescope, which will be used to obtain the required optical imaging data. This is complemented by Dutch and UK access to the 4.2m William Hershel Telescope to obtain the optical spectroscopy that provide estimates of the metal abundances. Higdon brings considerable experience in the analysis and interpretation of interacting galaxies. The project will advance understanding of the interstellar medium and star formation properties of extragalactic tails and bridges.

9908542史密斯这个两年的奖项是为美国-荷兰东田纳西州立大学的Beverly Smith与荷兰格罗宁根Kapetyn研究所的James Higdon和Jan货车der胡尔斯特合作研究，对15个河外尾和桥的样本进行综合研究，以确定金属丰度、星星形成率和效率如何随气体表面密度、相互作用参数和时标以及结构的恒星和气体形态而变化。 拟议的观测将使用William Hershel 4.5 m望远镜（由荷兰和英国运营）、东南天文学研究协会（SARA）运营的0.9望远镜以及国家射电天文台12 m毫米望远镜进行。望远镜和甚大阵。 观测研究将与样本中各个系统的流体动力学建模同时进行，以更好地确定相互作用的参数，并帮助确定触发尾部和桥中星星形成所需的条件。美国研究人员为这项合作带来了SARA 0.9望远镜的使用权，该望远镜将用于获得所需的光学成像数据。 荷兰和英国使用4.2米威廉赫谢尔望远镜获得光谱学，以估计金属丰度。 希顿在分析和解释相互作用的星系方面有相当丰富的经验。 该项目将促进对星际介质和河外尾和桥的星星形成特性的理解。