Submillimeter inteferometric studies of the fragmentation of high mass star forming regions

高质量恒星形成区域破碎的亚毫米干涉研究

• 批准号: 1108907
• 负责人: Jonathan Williams
• 金额: $ 28.69万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1108907&HistoricalAwards=false
• 关键词: Submillimeter; inteferometric; studies; fragmentation; mass

The PI and his team study how cold molecular material in high-mass star forming regions develops from the earliest, fragmentation and pre-stellar phases to an ionized region around massive stars. The recent surveys of the Galactic Plane at infrared and millimeter wavelengths allow an unbiased identification and classification of high mass star forming regions, including the infrared-dark, compact molecular clumps that are likely precursors to massive stars.A large systematic high-resolution study of the youngest phases of massive star formation will be done for about 40 high mass star forming regions over three years. Observations are done using the three submillimeter telescopes on Mauna Kea, the Submillimeter Array (SMA), James Clerk Maxwell Telescope (JCMT), and Caltech Submillimeter Observatory (CSO), through the share of time apportioned to the University of Hawaii. This work lays a foundation for early science observations with the NSF-funded Atacama Large Millimeter Array (ALMA). The results will place constraints on competing theoretical models for the formation of large stellar clusters and high-mass stars as the mechanisms how embryonic molecular clumps break down into star-forming cores, and the processes by which massive stars build up, are not yet well understood.This project has broader implications for studies of galaxy evolution and models of Solar System origins in a massive star environment. This project contributes to the education and training of a graduate student to the PhD level in observational and analytical techniques of (sub-)millimeter astronomy and interferometry . An undergraduate astronomy major from the minority-serving University of Hawaii at Hilo will also participate in the project by assisting on Mauna Kea observing runs, and learn about data reduction and analysis techniques.

PI和他的团队研究高质量恒星形成区域中的冷分子材料如何从最早，碎片化和固有阶段到巨大恒星周围的离子区域发展。在红外线和毫米波长下对银河平面进行的最近调查允许对高质量星形形成区域进行公正的识别和分类，包括红外漆黑的紧凑型分子团块，这些预兆可能是大型恒星的前体。通过在Mauna Kea，亚毫米阵列（SMA），James Clerk Maxwell望远镜（JCMT）和Caltech -imbillimimeter天者天文台（CSO）上的三个亚毫米望远镜（CSO）进行观察。这项工作奠定了NSF资助的Atacama大毫米阵列（ALMA）的早期科学观察基础。 The results will place constraints on competing theoretical models for the formation of large stellar clusters and high-mass stars as the mechanisms how embryonic molecular clumps break down into star-forming cores, and the processes by which massive stars build up, are not yet well understood.This project has broader implications for studies of galaxy evolution and models of Solar System origins in a massive star environment.该项目有助于研究和培训研究生在（亚）毫米天文学和干涉法的观察和分析技术中的博士学位和分析技术中的教育和培训。夏威夷少数族裔服务大学的本科天文学专业还将通过协助Mauna Kea观察跑步并了解减少数据和分析技术，从而参与该项目。