We use monte-carlo simulation to generate sample galaxies to run the mock observations. Assuming the absorption lines have Voigt profile,after smoothing and adding gaussian noise,get the simulating lines.
用蒙特卡罗方法产生样本星系进行模拟观测,假设吸收线具有Voigt吸收谱,经过平滑及加入高斯噪声得到模拟谱线。
参考来源 - 类星体的SiII与FeII吸收线性质·2,447,543篇论文数据,部分数据来源于NoteExpress
It shows you emission lines, no absorption lines.
你们看到发射谱线,不是吸收谱线。
And here you see the spectrum of the sun with all these absorption lines that I mentioned to you.
你们可以看到,太阳的光谱,以及我向你们提过的,吸收谱线。
In fact, if you see the absorption lines, you can tell what kind of elements are present in the star.
事实上,若你们看见吸收线,你就能知道恒星中,存在着哪些元素。
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