U.S.- France Cooperative Research: Nonlinear Astro-Seismology

这个为期三年的奖项将支持美国佛罗里达大学的J. Robert Buchler和法国默东巴黎天文台的Marie-Jo Goupil在恒星天文学方面的美法合作研究。他们建议分析基于地面和太空的观测数据，这些数据是关于可变（脉动）恒星的。他们将开发、调整和测试新的非线性技术，以限制某些类型的脉动恒星的建模。这项研究涉及两个学科：恒星天体物理学和非线性动力学与信号处理。现在，非线性信号处理使得检查脉动恒星的旧观测数据和提取难以获取的信息成为可能。这位美国研究人员是恒星变异性和恒星不规则变化的理论家。法国对脉动恒星的观测经验补充了他的专业知识。该项目利用了法国观测数据的优势，这对验证美国研究者的理论研究成果至关重要。这些结果将促进对恒星结构和演化以及星系化学成分和演化的理解。＊＊＊

9415868 Buchler This three-year award will support U.S.-France cooperative research in stellar astronomy between J. Robert Buchler of the University of Florida and Marie-Jo Goupil of the Paris Observatory in Meudon, France. They propose to analyze ground and space based observational data on variable (pulsating) stars. They will develop, adapt and test novel, nonlinear techniques in order to constrain modeling of certain types of pulsating stars. This study involves two disciplines: stellar astrophysics and nonlinear dynamics and signal processing. Nonlinear signal processing now makes it possible to examine older observational data on pulsating stars and to extract inaccessible information. The U.S. investigator is a theorist in stellar variability and irregular variations of stars. His expertise is complemented by French observational experience of pulsating stars. The project takes advantage of access to French observational data that will be essential to validate the U.S. investigator's theoretical research effort. The results will advance understanding of stellar structure and evolution and the chemical composition and evolution of galaxies. ***