Theoretical and Observational Studies of the Contributions of Novae to Galactic Chemical Evolution

本研究旨在提高新星、再新星和某些类型的共生双星的观测特性与理论认识之间的一致性。改进计算模型的努力将集中在纳入适当的核物理处理（即b-限CNO循环反应），爆炸峰值时的对流运动和喷射物的空间分布。目的是为了更好地与观测到的三个特定新星的光和径向速度曲线达成一致，这些新星有广泛的观测资料。对这些类型的发光恒星爆发的详细了解影响了直接场外的区域。这样的事件导致了星际介质中重元素的富集。它们的峰值亮度提供了校准我们银河系内结构的距离的方法，也提供了银河系外距离尺度的方法。

ABSTRACTAST-9819795Starrfield, SumnerThis research seeks to improve the agreement between the observational properties and theoretical understanding of novae, recurrent novae and some types of symbiotic binary stars. Efforts to improve the computed models will focus on incorporating a proper treatment of the nuclear physics (i.e. b-limited CNO cycle reactions), convective motions at the peak of the explosion, and spatial distribution of the ejecta. The objective is to achieve a better agreement with the observed light and radial velocity curves of three specific novae for which extensive observations are available. A detailed understanding of these types of luminous stellar outbursts impacts areas outside the immediate field. Such events contribute to the enrichment of the interstellar medium by heavy elements. Their peak luminosities provide ways of calibrating the distances to structures within our Galaxy, and also to the extragalactic distance scale.