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首页> 外文期刊>The Astrophysical journal >The Southern Crab from a New Perspective*
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The Southern Crab from a New Perspective*

机译:新视角的南方螃蟹*

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摘要

New Hubble Space Telescope images and Cerro Tololo Inter-American Observatory echelle spectra of the nebula around the symbiotic Mira Henize 2-104 are presented. The nebula consists of two nested hourglass-shaped structures and a collimated polar jet. Spatiokinematical modeling shows that all three outflows were ejected during approximately the same epoch, namely, about 5700 years ago, with the adopted distance of 4.4 kpc, in a mass-loss event unrelated to the present outburst. We present a tentative model in which the outer pair of lobes and jets are produced by a high-velocity outflow from the white dwarf companion to the Mira, while the inner, slowly expanding lobes are produced by the Mira wind itself.
机译:提出了新的哈勃太空望远镜影像和共生Mira Miraize 2-104周围星云的塞罗·托洛洛美洲天文台的echelle光谱。星云由两个嵌套的沙漏形结构和准直的极射流组成。时空动力学模型显示,在与当前爆发无关的质量损失事件中,所有三个流出都在大约同一时期(即大约5700年前)被排出,采用的距离为4.4 kpc。我们提出了一个试探性模型,其中,从白矮星同伴到Mira的高速流出产生了外部的一对裂片和射流,而Mira自身的风产生了内部缓慢扩展的裂片。

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