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arXiv 1306.6506astro-ph.HE
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银河系NH - AV关系及其在历史银河系信噪比中的应用

The Galactic NH - AV Relation and its Application to Historical Galactic SNRs

Wen-Wu Tian, Hongquan Su, F. Y. Xiang

摘要:

我们采用39个银河系超新星遗迹(SNRs)与X射线,光学和/或红外数据,改进了氢柱密度(NH)和光学消光(Av)之间的经典关系。我们发现NH =(1.69+/-0.07)*10^21 Av cm^(-2)mag^(-1)。将这一关系应用于具有良好历史记录的三个银河系SNR,使我们能够进一步限制其祖先的距离或幅度,这是对它们距离的独立访问。

英文摘要:

We refine a classic relation between the hydrogen column density (NH) and optical extinction (Av) by employing 39 Galactic Supernova Remnants (SNRs) with X-rays, optical and/or infra-red data available. We find NH = (1.69+/-0.07)*10^21 Av cm^(-2) mag^(-1) . Applying this relation to three Galactic SNRs with good historical records allows us to further constrain either their progenitor's distances or magnitudes, which is independent access to their distances.

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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