Chlorine-bearing molecules in molecular absorbers at intermediate redshifts
Chlorine-bearing molecules in molecular absorbers at intermediate redshifts
复制标题
分子吸收体中处于中间红移的含氯分子
DOI：
10.1051/0004-6361/201935860
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发表时间：
2019
影响因子：
6.5
通讯作者：
M. Gerin
中科院分区：
文献类型：
--
作者：
S. Wallström;S. Muller;È. Roueff;R. L. Gal;J. Black;M. Gerin
我们使用的观察中红移的分子吸收剂中的含氯物种，研究化学性质和35 Cl/37 Cl同位素比的吸收视线。在透镜类星体PKS 1830−211和B 0218+357前方的z = 0.89和z =0.68分子吸收体中，分别沿着沿着三条独立的视线探测到氯离子（H2 Cl+）。 氯化氢（HCl）仅在PKS 1830−211中被观察到，并且被发现与H2 Cl+的行为不同。在一条视线中可以检测到它，丰度比[H2 Cl +] / [HCl]> 1，但在另一条更弥散的视线中仍未检测到，丰度比[H2 Cl +] / [HCl] > 17。这两个含氯物种的吸收曲线相比，其他物种和讨论的吸收气体的物理性质。我们的研究结果是一致的图片出现的化学模型，不同种类的示踪气体具有不同的分子氢分数。35 Cl/37 Cl同位素比值在不同的视线测量，并讨论恒星核合成。
We use observations of chlorine-bearing species in molecular absorbers at intermediate redshifts to investigate chemical properties and 35Cl/37Cl isotopic ratios in the absorbing sightlines. Chloronium (H2Cl+) is detected along three independent lines of sight in the z = 0.89 and z = 0.68 molecular absorbers located in front of the lensed quasars PKS 1830−211 and B 0218+357, respectively. Hydrogen chloride (HCl) was observed only toward PKS 1830−211, and is found to behave differently from H2Cl+. It is detected in one line of sight with an abundance ratio [H2Cl+] / [HCl] ∼1, but remains undetected in the other, more diffuse, line of sight, with a ratio [H2Cl+] / [HCl] > 17. The absorption profiles of these two chlorine-bearing species are compared to other species and discussed in terms of the physical properties of the absorbing gas. Our findings are consistent with the picture emerging from chemical models where different species trace gas with different molecular hydrogen fraction. The 35Cl/37Cl isotopic ratios are measured in the different lines of sight and are discussed in terms of stellar nucleosynthesis.
河内工业大学（越南）
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--
影响因子：
6.5
作者：
Muller, S.;Beelen, A.;Longmore, S. N.
通讯作者：
Longmore, S. N.