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恒星如何形成于“灰尘山脉”


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<p><img src="http://img181.poco.cn/mypoco/myphoto/20110211/22/583787120110211223043020.jpg" alt=""></p><p>NGC 2174星云(距离地球6400光年,位于猎户星座之中)结构比空气更加稀薄,由于少量不透明星际灰尘存在,该星云呈现出“灰尘山脉”的形态。在数百万年里,这些恒星很可能完全驱散“灰尘山脉”,在诸如NGC 2174星云这样猛烈的恒星诞生区域,恒星以“先到先得”的方式诞生,当它们恒星便狂乱猛烈地“进食”求得生存权。然而,在这种情况下恒星形成处于低效率进程——构成恒星的多数成分将以气体灰尘云(或者星云)的形式浪费消耗,最终逐渐驱散。<br></p>

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