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银河系核球或诞生于100亿年前 - 站长搜索
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银河系核球或诞生于100亿年前

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2020-11-03 08:41:06 转载来源: 科技日报

我们所在银河系的形状就像两个煎蛋背靠背粘在一起。星盘中心有一个隆起的区域叫核球,这是无数漩涡星系的一个共同特征,天文学家一直在研究银河系中心核球是何时以及如何形成的

我们所在银河系的形状就像两个煎蛋背靠背粘在一起。星盘中心有一个隆起的区域叫核球,这是无数漩涡星系的一个共同特征,天文学家一直在研究银河系中心核球是何时以及如何形成的。

10月27日,据国外媒体报道,一项最新的研究发现,在我们所在星系中央隆起处,多数恒星形成于100亿年前的一次恒星诞生爆发期。该研究结果已发表在《皇家天文学会月刊》上。

研究人员对数百万颗恒星进行调查发现,银河系中心的大多数恒星是在100多亿年前银河系内充满气体时形成的,这个过程可能是由原始物质的简单积累所触发,或者更戏剧性的,也许是与另一个年轻的星系合并而成。

美国马里兰州巴尔的摩的太空望远镜科学研究所首席研究员克里斯蒂安·约翰逊说:“许多其他漩涡星系同银河系一样,有类似的隆起,所以如果我们能理解银河系是如何形成其隆起区域,那么就能很好了解其他星系是如何形成的。”

标签: 银河系 核球 生于 100亿 年前


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