宇宙天体中的核素的成分是怎么测定的阿？？
有些有光谱 但是没有光谱怎么知道这个天体的核素成分阿？
纯理论计算么？ 即使在知道整个核发应链各个截面情况下 也需要知道它初始的核素成分比阿 何况整个核反应链网络的截面测量是一项非常复杂的工作。

谢谢大家

宇宙天体中的核素的成分是怎么测定的阿？？
有些有光谱 但是没有光谱怎么知道这个天体的核素成分阿？

If there is light, there is spectrum. If there is no light, we have no idea what they are made of (in fact, we could only barely know they are there through gravitational effects)

纯理论计算么？ 即使在知道整个核发应链各个截面情况下 也需要知道它初始的核素成分比阿 何况整个核反应链网络的截面测量是一项非常复杂的工作。

If there is light, there is spectrum. If there is no light, we have no idea what they are made of (in fact, we could only barely know they are there through gravitational effects)
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thanks.i know but expect more .

There are a group who measure the cross section of many nucleis in our here.They cooperate with High Energy Insititue, and want to calculate the synthesis of nuclides in celestial bodys.Of course, maybe our work in nuclear data will help their calculation.But I know limited about this.^_^
hawk
best wishes.