论文标题
检测复杂氮分子氰化物氰化物对热分子核G10.47+0.03的检测
Detection of complex nitrogen-bearing molecule ethyl cyanide towards the hot molecular core G10.47+0.03
论文作者
论文摘要
对毫米和亚毫米波长在毫米和亚毫米波长下对热分子核的复杂有机分子线的研究提供了有关星际培养基中化学复杂性（ISM）的启发性知识。我们介绍了使用Atacama大型米计/米计（Atacama）大型米计/米计（alimimeter（alimimeter）阵列（alimimeter/immilimeter阵列（alimimeter）阵列（alimimeter（alimimeter）阵列（alimimeter）阵列（alimimeter（alimimeter），我们介绍了复杂含氮分子氰化物（C $ _ {2} $ h $ _ {5} $ CN）的旋转发射线（C $ _ {2} $ H $ _ {5} $ CN）。 c $ _ {2} $ h $ _ {5} $ cn的估计列密度对G10.47+0.03 IS（7.7 $ \ pm $ 0.5）$ \ times $ \ times $ 10 $^{16} $ cm $^{ - 2} $，具有352.9 $ \ pm $ 66.8 k的高旋转温度， c $ _ {2} $ h $ _ {5} $ cn相对于h $ _ {2} $，对于g10.47+0.03为5.70 $ \ times $ 10 $^{ - 9} $。我们观察到，C $ _ {2} $ H $ _ {5} $ Cn的估计分数丰度与现有的三相热身化学建模丰度C $ _ {2} $ h $ _ {5} $ cn相似。我们还讨论了c $ _ {2} $ h $ _ {5} $ cn对热分子核的可能形成机制，我们声称我们声称在Ch $ _ {2} $和CH $ _ {2} $和CH $ _ {2} $ _ {2} $ cn之间的无障碍和放热的激进反应负责C $ c $ c $ cn $ cn的生产。 （$ \ sim $ 10 $^{ - 9} $）在G10.47+0.03的谷物表面中。
The studies of the complex organic molecular lines towards the hot molecular cores at millimeter and submillimeter wavelengths provide instructive knowledge about the chemical complexity in the interstellar medium (ISM). We present the detection of the rotational emission lines of the complex nitrogen-bearing molecule ethyl cyanide (C$_{2}$H$_{5}$CN) towards the chemically rich hot molecular core G10.47+0.03 using the Atacama Large Millimeter/Submillimeter Array (ALMA) band 4 observations. The estimated column density of C$_{2}$H$_{5}$CN towards the G10.47+0.03 is (7.7$\pm$0.5)$\times$10$^{16}$ cm$^{-2}$ with the high rotational temperature of 352.9$\pm$66.8 K. The estimated fractional abundance of C$_{2}$H$_{5}$CN with respect to H$_{2}$ towards the G10.47+0.03 is 5.70$\times$10$^{-9}$. We observe that the estimated fractional abundance of C$_{2}$H$_{5}$CN is similar to the existing three-phase warm-up chemical modelling abundance of C$_{2}$H$_{5}$CN. We also discuss the possible formation mechanism of C$_{2}$H$_{5}$CN towards the hot molecular cores, and we claim the barrierless and exothermic radical-radical reaction between CH$_{2}$ and CH$_{2}$CN is responsible for the production of low abundant of C$_{2}$H$_{5}$CN ($\sim$10$^{-9}$) in the grain surface of G10.47+0.03.
