论文标题
成为“耗尽”的彗星意味着什么？麦当劳天文台的原型耗尽彗星21p/giacobini-zinner的高光谱分辨率观察结果
What Does It Mean to be a "Depleted" Comet? High Spectral Resolution Observations of the Prototypical Depleted Comet 21P/Giacobini-Zinner from McDonald Observatory
论文作者
论文摘要
我们从2018年的六个晚上开始对彗星21p/giacobini-zinner的高光谱分辨率观察结果。通过Tull Coude光谱仪在270万麦克唐纳观测的270万Harlan J. Smith望远镜上获得观察结果。该彗星的光谱在C $ _2 $，C $ _3 $，CH和NH $ _2 $相对于CN中显示出强大的耗竭。我们探索彗星耗尽彗星的含义，并表明与典型的彗星相比，A分子带中相似的相对线强度的光谱中存在所有物种。耗竭代表了所研究的物种的丰度要低得多。
We present high spectral resolution optical observations of comet 21P/Giacobini-Zinner from six nights in 2018. The observations were obtained with the Tull coude spectrograph on the 2.7m Harlan J. Smith Telescope of McDonald Observatory. This comet's spectrum shows strong depletions in C$_2$, C$_3$, CH, and NH$_2$ relative to CN. We explore what it means for a comet to be depleted and show that all of the species are present in the spectrum at similar relative line intensities within a a molecular band compared with a typical comet. The depletions represent a much lower abundance of the species studied.
