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arXiv 1004.2600astro-ph.SR
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大质量双星Eta Carinae中瞬态快蓝吸收线的解释

Explaining the transient fast blue absorption lines in the massive binary system Eta Carinae

Amit Kashi, Noam Soker, Muhammad Akashi

摘要:

我们使用最近的观察,他我$\lambda10830 Å$吸收线和三维流体动力学数值模拟的风碰撞,加强的情况下,大规模的双星系统船底座伊塔的半长轴的方向,其中第二颗星是对我们在近星点通道。这些观测结果表明,快速蓝色吸收成分只存在了几个星期前的近星点通过。我们表明,快速的蓝色吸收组件的瞬态性质支持的几何形状,快速的二次风,前和后冲击材料,通过在近星点通道附近的主星前面。

英文摘要:

We use recent observations of the He I $\lambda10830 Å$ absorption line and 3D hydrodynamical numerical simulations of the winds collision, to strengthen the case for an orientation of the semimajor axis of the massive binary system Eta Carinae where the secondary star is toward us at periastron passage. Those observations show that the fast blue absorption component exists for only several weeks prior to the periastron passage. We show that the transient nature of the fast blue absorption component supports a geometry where the fast secondary wind, both pre and post-shock material, passes in front of the primary star near periastron passage.

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