RUI: Supernova Ejecta, Shocks, and the Interstellar Medium

RUI：超新星喷射物、冲击波和星际介质

• 批准号: 0908566
• 负责人: Frank Winkler
• 金额: $ 29.98万
• 依托单位: Middlebury College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908566&HistoricalAwards=false
• 关键词: RUI; Supernova; Ejecta; Shocks; Interstellar

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Under this award, Dr. P. Frank Winkler (Middlebury College) will carry out a program of research with the overarching theme of increasing our understanding of how supernovae explode, how their prodigious energy release affects their host galaxies, and how they contribute to the chemical evolution of the Universe. For core-collapse supernovae, both models and observations indicate that the explosions are not spherically symmetric. New measurements of proper motions and Doppler velocities in the young Galactic remnants Puppis A and G292.0+1.8 will provide three-dimensional models for asymmetries in the surviving ejecta fragments. Furthermore, chemical abundances inferred from spectra can tie present filaments to their origin in specific core layers of the progenitor stars. The expansion of young Type Ia supernova remnants, including Tycho (SN 1572) and RCW86 (SN 185), will be measured through proper motions of Balmer filaments that delineate their shells. These will then be combined with spectroscopic determination of the shock velocity to obtain reliable distances for the first time. The Magellanic Cloud Emission-Line Survey (MCELS) surveyed both the Large and Small Magellanic Clouds, our nearest neighbor galaxies, from the 0.6-meter Schmidt telescope at Cerro Tololo Inter-American Observatory. An important goal early in the project will be to bring to publication MCELS-based catalogs of planetary nebulae and supernovae remnants (SNRs), including the first comprehensive flux measurements. All the MCELS image data will be made easily available on-line. A final legacy project will be compilation of an Emission-Line Atlas of Galactic SNRs, based on CCD images in lines of hydrogen, oxygen, and sulfur, the first such images to be published in most cases.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。弗兰克·温克勒博士（Middlebury College）将开展一项研究计划，其首要主题是增加我们对超新星爆炸方式的理解，它们巨大的能量释放如何影响其宿主星系，以及它们如何有助于宇宙的化学演化。 对于核心坍缩的超新星，模型和观测都表明爆炸不是球对称的。对年轻的银河系残骸船尾座A和G292.0+1.8的自行和多普勒速度的新测量将为幸存的喷出物碎片的不对称性提供三维模型。此外，从光谱中推断的化学丰度可以将目前的细丝与其起源联系起来，这些细丝位于祖星的特定核心层。 年轻的Ia型超新星遗迹的膨胀，包括第谷（SN 1572）和RCW 86（SN 185），将通过描绘它们外壳的巴耳末灯丝的自行来测量。然后，这些将与冲击波速度的光谱测定相结合，以首次获得可靠的距离。 麦哲伦云发射线巡天（MCELS）从Cerro Tololo美洲天文台的0.6米施密特望远镜对我们最近的邻居星系大麦哲伦云和小麦哲伦云进行了巡天。 该项目早期的一个重要目标将是出版基于MCELS的行星状星云和超新星遗迹（SNRs）目录，包括第一次全面的通量测量。 所有的MCELS图像数据将很容易在线提供。 最后一个遗留项目将是根据氢、氧和硫线的CCD图像编制银河系SNRs发射线图集，这是大多数情况下首次公布的此类图像。