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arXiv 1011.0905astro-ph.SR
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2010年共生的Mira V407 Cyg新星爆发

The 2010 nova outburst of the symbiotic Mira V407 Cyg

U. Munari, V. H. Joshi, N. M. Ashok, D. P. K. Banerjee, P. Valisa, A. Milani, A. Siviero, S. Dallaporta, F. Castellani

摘要:

共生双星Mira V407 Cyg在2010年经历的新星爆发已经在光学和红外波段进行了广泛的研究,包括光度和光谱观测。这一爆发,让人想起RS Oph所显示的类似事件,可以被描述为一个非常快速的He/N新星爆发,同时深深嵌入其凉爽的巨大同伴的稠密风中。最初的热核闪光产生的硬辐射电离并激发了很远距离的米拉风(在4天的时间尺度上观察到复合)。新星喷出物被发现随着时间的推移逐渐减速,因为它扩展到米拉风。这是从线宽从+2.3天的2760 km/s到+196天的200 km/s的变化推导出来的。米拉的风是巨大的,并且足够扩展到一个外部中性和未受干扰的区域,以在所有爆发阶段生存下来。

英文摘要:

The nova outburst experienced in 2010 by the symbiotic binary Mira V407 Cyg has been extensively studied at optical and infrared wavelengths with both photometric and spectroscopic observations. This outburst, reminiscent of similar events displayed by RS Oph, can be described as a very fast He/N nova erupting while being deeply embedded in the dense wind of its cool giant companion. The hard radiation from the initial thermonuclear flash ionizes and excites the wind of the Mira over great distances (recombination is observed on a time scale of 4 days). The nova ejecta is found to progressively decelerate with time as it expands into the Mira wind. This is deduced from line widths which change from a FWHM of 2760 km/s on day +2.3 to 200 km/s on day +196. The wind of the Mira is massive and extended enough for an outer neutral and unperturbed region to survive at all outburst phases.

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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