DUST FORMATION IN THE EJECTA OF COMMON ENVELOPE SYSTEMS
DUST FORMATION IN THE EJECTA OF COMMON ENVELOPE SYSTEMS
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DOI：
10.1088/0004-637x/768/2/193
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
G. Lü;Chunhua Zhu;P. Podsiadlowski
中科院分区：
文献类型：
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作者：
G. Lü;Chunhua Zhu;P. Podsiadlowski
在近距离二进制系统中弹出的材料（CE）阶段为粉尘形成提供了理想的环境。通过构建一个简单的玩具模型来描述CE射出的密度和温度的演变并使用AGBDUST代码来建模灰尘形成，我们表明在这种环境下灰尘可以有效地形成。 CE喷射中产生的实际灰尘块在很大程度上取决于其温度和密度演化。我们通过人口合成代码来估计CE进化产生的总尘埃质量，并表明，与渐近巨型分支星星的灰尘产生相比，CE射流中产生的灰尘可能非常重要，甚至可能在某些情况下占主导地位。
The material that is ejected in a common-envelope (CE) phase in a close binary system provides an ideal environment for dust formation. By constructing a simple toy model to describe the evolution of the density and the temperature of CE ejecta and using the AGBDUST code to model dust formation, we show that dust can form efficiently in this environment. The actual dust masses produced in the CE ejecta depend strongly on their temperature and density evolution. We estimate the total dust masses produced by CE evolution by means of a population synthesis code and show that, compared to dust production in asymptotic giant branch stars, the dust produced in CE ejecta may be quite significant and could even dominate under certain circumstances.