【摘要】 大量研究表明,蓝离散星的形成可能有多种机制,目前比较流行的形成机制可以概括为以下几类:密近双星系统的质量传输及双星并合、密集星场的恒星碰撞,以及包含双星系统的恒星间 (双星-单星、双星-双星)相互作用导致的恒星并合。与此同时,蓝离散星在各类恒星系统中的普遍存在,也使得研究这类恒星的形成及演化成为追踪恒星系统动力学演化、化学演化及积分光谱性质变化的有效指针。更多还原

【Abstract】 Observations and theoretical studies show that several different mechanisms should be responsible for the formation of Blue Stragglers (BSs). This is true even within a single composite system. Nowadays, some popular mechanisms for the formation of BSs are: mass transfer and coalescence in close binary systems; stellar interactions in dense environments; and stellar coalescence caused by stellar resonant interactions in binary-binary and binary-single star systems. Meanwhile, BSs could be found almost in all kinds of stellar systems. They play important role in the dynamical and chemical evolution of stellar systems, and have great influence on the integrated spectral properties of stellar systems. Blue stragglers are useful tracers for the study of binary populations, stellar content and stellar evolution in composite stellar systems.更多还原