Extragalactic Planetary Nebulae

河外行星状星云

• 批准号: 0307489
• 负责人: Roberto Mendez
• 金额: $ 23.36万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0307489&HistoricalAwards=false
• 关键词: Extragalactic; Planetary; Nebulae

AST-0307489MendezPlanetary nebulae (PN) are easy to detect and measure in early type galaxies, and make valuable test particles for studying the angular momentum and dark matter content and distribution in these types of galaxies, an otherwise notoriously difficult problem. This research uses a recently developed and very efficient observational technique for PN radial velocity measurements, combining narrow band imaging with slit-less spectroscopy. Now that this technique has been successfully demonstrated, the researcher will investigate a much larger sample of galaxies, studying rotation and dark matter, improving the distance determinations, and exploring the possibility of abundance studies. He will also add the capability to, and test its efficacy on, a wider range of telescopes than before.This study will introduce a new technique and train students in its use, and produce an enormous amount of PN kinematic information for many early type galaxies, both isolated and in nearby galaxy clusters, which will impact basic problems in modern astrophysics. The results are likely to become a new standard of reference for this kind of astrophysical research.

AST-0307489 Mendezplanetary星云（PN）易于检测和测量早期类型的星系，并制作出宝贵的测试粒子，以研究这些类型的星系中的角动量和暗物质含量以及分布，这是一个众所周知的困难问题。 这项研究使用了最近开发且非常有效的观察技术来用于PN径向速度测量，将窄带成像与无缝隙光谱结合在一起。 既然已成功证明了这项技术，研究人员将研究一个更大的星系样本，研究旋转和暗物质，改善距离的确定并探索丰富的研究的可能性。 他还将添加比以前更广泛的望远镜的能力并测试其功效。这项研究将引入一种新技术并培训学生的使用，并为许多早期类型的星系提供大量的PN Kinematic信息，这些星系是孤立的，并且在附近的银河系中会影响现代人类体系中的基本问题，这将影响现代人类的基本问题。 结果可能会成为此类天体物理研究的新参考标准。