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arXiv 0910.2200astro-ph.SRastro-ph.GA
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行星状星云通过ISM相互作用的再增亮

The rebrightening of planetary nebulae through ISM interaction

C J Wareing

摘要:

行星状星云(PNE)与星际介质的相互作用,当它们穿过它时,现在被认为是一个主要的塑造效应,不仅对古老和大的PNE,而且对相对年轻的具有高速中心恒星的PNE。最常见的效应是PN壳层与中央恒星先前演化阶段形成的弓形激波结构相互作用时的再亮。在这篇综述中,我们第一次详细讨论了这种再亮现象,并讨论了它的起源,突出了一些观察到的例子。我们继续讨论AGB恒星的祖先,审查弓激波结构的证据,并考虑后代的再亮PNE -强烈破坏的对象承担非常小的相似之处,典型的PNE。Sh 2-68被推断可能是迄今为止唯一有记录的这种PN的情况。

英文摘要:

The interaction of planetary nebulae (PNe) with the interstellar medium as they move through it is now acknowledged to be a major shaping effect not just for ancient and large PNe, but also for relatively young PNe with high speed central stars. The most common effect is a rebrightening as the PN shell interacts with a pre-existing bow shock structure formed during the previous evolutionary phase of the central star. In this review, we consider this rebrightening in detail for the first time and discuss its origins, highlighting some observed examples. We go on to discuss the AGB star progenitors, reviewing the evidence for bow shock structures, and consider the progeny of rebrightened PNe - strongly disrupted objects which bear very little resemblance to typical PNe. Sh 2-68 is inferred to be perhaps the only documented case so far of such a PN.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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