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LARGE MAGELLANIC CLOUD BAR: EVIDENCE OF A WARPED BAR

机译:大型麦哲伦云条:缠绕条的证据

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摘要

The geometry of the LMC bar is studied using the dereddened mean magnitudes of the red elump stars (Ⅰ_0) from the Optical Gravitational Lensing Experiment Ⅱ catalog. The value of Ⅰ_0 is found to vary in the east-west direction such that both the east and the west end of the bar are closer to us with respect to the center of the bar. The maximum observed variation has a statistical significance of more than 7.6 σ with respect to the maximum value of random error. The variation in Ⅰ_0 indicates the presence of warp in the bar of the LMC. The warp and the structures seen in the bar indicate that the bar could be a dynamically disturbed structure.
机译:LMC棒的几何形状是使用光学引力实验Ⅱ目录中递减的红色椭圆星(Ⅰ_0)的平均大小来研究的。发现Ⅰ_0的值在东西方向上变化,以致棒的东端和西端都相对于棒的中心距离我们更近。相对于随机误差的最大值,观察到的最大变化的统计显着性大于7.6σ。 Ⅰ_0的变化表明LMC的钢筋存在翘曲。钢筋中的翘曲和结构表明钢筋可能是动态受扰的结构。

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