共生星，包含气体星云，并由一颗高温白矮星或亚矮星或主序星吸积红巨星子星所丢失物质的长周期不接或半接双星，以同时呈现高温和低温光谱为其主要观测特征。
共生星双星是一颗有强大星风物质损失的红巨星与一颗早型热星组成的特殊双星系统。
The symbiotic binary is a special system, consisting of a hot early type star and a cool late type supergiant with strong stellar wind, which forms an expanding envelope.
利用星族合成方法，我们分别对半相接共生星、分离共生星和d -型共生星作了理论研究。
By means of a population synthesis code, we have carried out a theoretical study of semi-detached symbiotic stars, detached symbiotic stars and D-symbiotic stars.
本论文综述了共生星的观测特性和理论研究现状，并详细介绍了本人在攻读博士学位期间在共生星理论研究领域的工作。
In this thesis, we summarize recent observational properties and theoretical study on symbiotic stars, and present the results of our studies on the field.
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