论文标题
红移Z = 0.89处的新分子物种
New molecular species at redshift z=0.89
论文作者
论文摘要
我们在外层次的来源中介绍了CH3SH，C3H+，C3N，HCOOH，CH2CHCN和H2CN的第一个检测。即，位于Z = 0.89的星系的螺旋臂，在视线上，直到无线电大声的类星体PKS 1830-211。还检测到OCS，SO2和NH2CN，将早期星系中鉴定出的分子物种总数提高到54，而不是计数同位素学。在用Yebes 40 m望远镜（REST-FRAME频率：58.7-93.5 GHz）制造的Q带光谱线调查过程中，在距星系中心2 kpc的SW Quasar图像吸收中进行检测。我们得出了这些物种的旋转温度和色谱柱密度，这些旋转温度和柱子密度被发现受到次热激发。分子丰度，尤其是C3H+的较大丰度以及几种先前报道的阳离子的散发或半透明云的特征，具有增强的紫外线辐射或强烈的冲击。
We present the first detections of CH3SH, C3H+, C3N, HCOOH, CH2CHCN, and H2CN in an extragalactic source. Namely the spiral arm of a galaxy located at z=0.89 on the line of sight to the radio-loud quasar PKS 1830-211. OCS, SO2, and NH2CN were also detected, raising the total number of molecular species identified in that early time galaxy to 54, not counting isotopologues. The detections were made in absorption against the SW quasar image, at 2 kpc from the galaxy centre, over the course of a Q band spectral line survey made with the Yebes 40 m telescope (rest-frame frequencies: 58.7-93.5 GHz). We derived the rotational temperatures and column densities of those species, which are found to be subthermally excited. The molecular abundances, and in particular the large abundances of C3H+ and of several previously reported cations, are characteristic of diffuse or translucent clouds with enhanced UV radiation or strong shocks.
