International Research Fellowship Program: The Breakout of Protostellar Winds from their Natal Cores

0203178威尔金国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项提供了联合研究的机会，并使用独特或互补的设施，专业知识和国外的实验条件。该奖项将支持由博士弗朗西斯P.威尔金二十四个月的研究奖学金与博士苏珊娜Lizano在墨西哥国立自治大学，在莫雷利亚，墨西哥。该项目的共同资金来自数学和物理科学理事会的多学科活动办公室，该项目将涉及开发年轻恒星分子外流的动力学和辐射冷却模型。 他们将阐明原恒星风加速周围物质的过程。 主要的新特点是：1）包含激波和环境物质之间的切变，2）计算云核相互作用区域的详细流动，特别是风激波相对于扫起的环境物质的位置，包括磁场的影响，和3）预计将由ISO，索菲亚和SIRTF观测的红外辐射的详细模型，通过在从动力学模型推导出的冲击的几何形状上组装平面冲击模型来构建。 该模型也将是相关的比较与毫米波干涉观测的分子外流，在那里我们将预测运动学，如位置-速度图，是直接可比的数据。 获得的结果将是：原恒星风激波的几何形状和位置;阐明剪切在分子外流运动学中的作用;过去由于混合和/或粘在激波上的不自然假设而限制的被掠分子物质的运动学;分子外流传播到云核之外的初始条件;详细的，可测试的预测结果的x风模型的磁离心，原恒星风。莫雷利亚有一个强大的研究小组以外的博士利扎诺，谁是工作的观测和模型的环境的年轻恒星，包括博士路易斯罗德里格斯，斯坦利·库尔茨博士，艾伦·沃森博士，保拉·达莱西奥恩里克·巴斯克斯·塞马德尼医生哈维尔·巴列斯特罗斯·帕雷德斯医生

0203178WilkinThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a twenty-four month research fellowship by Dr. Francis P. Wilkin to work with Dr. Susana Lizano at the Universidad Nacional Autonoma de Mexico, in Morelia, Mexico. Co-funding for this project comes from the Math and Physical Science Directorate's Office of Multidisciplinary Activities.This project will involve the development of models of both the dynamics and radiative cooling of molecular out-flows from young stars. They will elucidate the process of acceleration of ambient material by protostellar winds. The principal new features will be 1) the inclusion of shear between the shocked wind and ambient matter, 2) the calculation of the detailed flow in the cloud core region of interaction, especially the location of the wind shock relative to the swept-up ambient matter, including the effects of magnetic fields, and 3) a detailed model of the infrared emission expected to be observed by ISO, SOFIA, and SIRTF, constructed by assembling planar shock models over the geometry of the shocks deduced from the dynamical model. The model will also be relevant to comparison with mm-wave interferometric observations of molecular outflows, where we will predict kinematics such as position-velocity diagrams that are directly comparable to the data. The results obtained will be: geometric shape and location of the protostellar wind shock; the elucidation of the role of shear in the kinematics of molecular outflows; the kinematics of swept-up molecular material, which has been limited in the past by unnatural assumptions of mixing and/or sticking to the shock; the initial conditions for molecular outflows propagating beyond the cloud core; detailed, testable predictions of the consequence of the x-wind model of magnetocentrifugal, protostellar winds.Morelia has a strong group of researchers beyond Dr. Lizano, who are working on observations and models of the environments of young stars, including Dr. Luis Rodriguez, Dr. Stanley Kurtz, Dr. Alan Watson, Dra. Paola D'Alessio, Dr. Enrique Vazquez-Semadeni, and Dr. Javier Ballesteros-Paredes.