Glossary term: 星系棒
Description: 许多螺旋星系的中心区域都存在一个棒状结构。星系中心的大部分恒星、气体和尘埃都沿着这条笔直的棒状结构分布。星系的旋臂从这条棒状结构的外边缘开始。带有棒状结构的螺旋星系被称为棒旋星系。银河系被认为是一个棒旋星系。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
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