Volatiles in Disks Around Young Stars: Disentangling Our Origins

年轻恒星周围盘中的挥发物：解开我们的起源

• 批准号: 0908230
• 负责人: Erika Gibb
• 金额: $ 34.39万
• 依托单位: University of Missouri-Saint Louis
• 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: 2009-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908230&HistoricalAwards=false
• 关键词: Volatiles; Disks; Around; Young; Stars

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Dr. Erika Gibb will investigate how volatile molecules such as water, carbon monoxide, and simple organic molecules evolved through the collapse of a dark cloud into a protoplanetary disk and eventual incorporation into protoplanets or comets. This proposal will support a high-resolution, near-infrared spectroscopic study of numerous disks and envelopes surrounding very young stars to discern the chemical composition of these objects. A major goal of the program will be to explore how the formation environment and viewing geometry affect the measured composition of gas and dust in star forming regions. The results will be used to test models of chemical evolution of clouds and disks. This project is expected to have a broad impact on studies of origins of life and the evolution of young stars, and will contribute to a better understanding of interstellar and disk chemistry and will significantly impact chemical modeling of disks. Dr. Gibb and her team will integrate their research into secondary school education by educating teachers in the metropolitan St. Louis area. They will develop a summer workshop, in collaboration with the College of Education at her institution, to train teachers in the St. Louis area in the effective classroom use of astronomy-based activities. The activities will enhance conceptual understanding of science and teach the fundamental importance of scientific inquiry. The workshop will address key components of the Missouri Science Grade Level Expectations for secondary students through an interdisciplinary approach to science. A similar workshop, focusing on comet science, will be developed by Dr. Gibb and a collaborator for the Washington, DC metropolitan area.

该奖项根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金。埃里卡·吉布博士将研究水、一氧化碳和简单有机分子等挥发性分子如何通过乌云塌陷演化成原行星盘，并最终融入原行星或彗星。该提案将支持对非常年轻的恒星周围的众多圆盘和包层进行高分辨率、近红外光谱研究，以辨别这些物体的化学成分。该计划的一个主要目标是探索形成环境和观察几何形状如何影响恒星形成区域中气体和尘埃的测量成分。结果将用于测试云和磁盘的化学演化模型。该项目预计将对生命起源和年轻恒星演化的研究产生广泛影响，并将有助于更好地了解星际和盘化学，并将对盘的化学建模产生重大影响。 吉布博士和她的团队将通过对圣路易斯大都会地区的教师进行教育，将他们的研究融入中学教育。 他们将与她所在机构的教育学院合作举办一个夏季研讨会，培训圣路易斯地区的教师如何在课堂上有效地利用基于天文学的活动。这些活动将增强对科学的概念理解并教导科学探究的根本重要性。该研讨会将通过跨学科的科学方法解决中学生密苏里州科学年级期望的关键组成部分。吉布博士和一位合作者将在华盛顿特区举办一个类似的研讨会，重点关注彗星科学。