The results of an H I 21 cm line survey of a sample of Magellanic spiral galaxies with apparent optical companions reveal that only four of 13 systems have confirmed H I–detected neighbors. The current interactions are affecting the morphology of the main galaxy in only two cases, NGC 3664 and NGC 3995. The presence of companions near NGC 2537 and UGC 5391 appears to have no effect on the morphology of those galaxies. Overall, there is little difference between the asymmetry of the H I profiles of those galaxies with and without companions, and on average, these Magellanic spirals have H I profiles that are no more asymmetric than a random sample of spirals in the field. We conclude that current interactions cannot be responsible for the lopsided morphology of most of the galaxies in this sample and that, whatever its original cause, lopsidedness must be a long-lived characteristic of these galaxies.
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机译：对麦哲伦螺旋星系样本进行明显的光学伴星的H I 21 cm线调查的结果表明，在13个系统中只有4个已确认H I探测到的邻居。当前的相互作用仅在两种情况下影响主星系的形态，即NGC 3664和NGC3995。NGC2537和UGC 5391附近伴星的出现似乎对这些星系的形态没有影响。总体而言，有伴星和无伴星的星系的H I轮廓的不对称性之间几乎没有差异，并且平均而言，这些麦哲伦螺旋具有的H I轮廓不比该领域的随机螺旋样品更不对称。我们得出的结论是，当前的相互作用不能解释该样本中大多数星系的偏斜形态，并且，无论其最初原因是什么，偏斜度必须是这些星系的长期特征。
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