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arXiv 0907.4822astro-ph.GAastro-ph.SR
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银河系HI分布中的共转间隙

The corotation gap in the Galactic HI distribution

Eduardo B. Amôres, Jacques R. D. Lépine, Yu. N. Mishurov

摘要:

我们使用的HI数据从LAB调查映射的环形间隙HI密度略位于太阳圈之外。采用$R_0$ = 7.5 kpc,得到平均半径为8.3 kpc,平均间隙宽度为0.8 kpc。的HI间隙的特性密切对应的预期的,作为预测的理论和数值模拟的气体流动附近的共转共振。

英文摘要:

We used the HI data from the LAB survey to map the ring-shaped gap in HI density which lies slightly outside the solar circle. Adopting $R_0$= 7.5 kpc, we find and average radius of 8.3 kpc and an average gap width of 0.8 kpc. The characteristics of the HI gap correspond closely to the expected ones, as predicted by theory and by numerical simulations of the gas flow near the corotation resonance.

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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