论文标题
搜索TMC-1的哥谭观察中的杂环
A Search for Heterocycles in GOTHAM Observations of TMC-1
论文作者
论文摘要
我们使用深宽带宽带波长光谱线调查的gotham大型项目的深宽带波长光谱线调查，对金牛座分子云1（TMC-1）进行了广泛的搜索，对金牛座的分子云1（TMC-1）进行了广泛的搜索。尽管它们在陆地化学中无处不在，并且在源中确认存在许多环状和多环芳烃，但我们找不到任何杂环物种的证据。在这里，我们报告了马尔可夫链蒙特卡洛（MCMC）分析获得的这些分子的柱密度的派生上限，并将这种方法与传统的单线上限测量值进行了比较。我们进一步假设为什么在我们的数据中没有这些分子，它们在星际空间中如何形成以及确保其检测所需的观测的性质。
We have conducted an extensive search for nitrogen-, oxygen- and sulfur-bearing heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband centimeter-wavelength spectral line survey of the region from the GOTHAM large project on the Green Bank Telescope. Despite their ubiquity in terrestrial chemistry, and the confirmed presence of a number of cyclic and polycyclic hydrocarbon species in the source, we find no evidence for the presence of any heterocyclic species. Here, we report the derived upper limits on the column densities of these molecules obtained by Markov Chain Monte Carlo (MCMC) analysis and compare this approach to traditional single-line upper limit measurements. We further hypothesize why these molecules are absent in our data, how they might form in interstellar space, and the nature of observations that would be needed to secure their detection.
