在M82星暴中OH主线激光的高速度分辨率观测
High-velocity-resolution observations of OH main line lasers in the M82 starburst
摘要：
利用VLA对M82星暴进行了一系列1.6GHz的高速度分辨率观测。这些意见跟进以前的研究主线OH脉泽发射在中央千秒差距的这个星爆区域，但更大的速度分辨率，显示显着的速度结构，在一些脉泽斑点的第一次。总共探测到13个脉泽，包括所有已知的来源，但只有一个。虽然这些脉泽中的一些仍然是未解决的速度，这些新的结果清楚地显示速度结构的频谱从几个脉泽地区。位置-速度图与H{ \sc i}的分布吻合得很好，包括在星爆西部的蓝色特征上有趣的速度结构，它跟踪了电离气体中的速度分布。
英文摘要：
Using the VLA, a series of high velocity resolution observations have been made of the M82 starburst at 1.6 GHz. These observations follow up on previous studies of the main line OH maser emission in the central kiloparsec of this starburst region, but with far greater velocity resolution, showing significant velocity structure in some of the maser spots for the first time. A total of thirteen masers were detected, including all but one of the previously known sources. While some of these masers are still unresolved in velocity, these new results clearly show velocity structure in spectra from several of the maser regions. Position-velocity plots show good agreement with the distribution of H{\sc i} including interesting velocity structure on the blueward feature in the west of the starburst which traces the velocity distribution seen in the ionised gas.
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