论文标题
光谱线堆叠技术的调查和应用于HC $ _ {11} $ n的检测
An Investigation of Spectral Line Stacking Techniques and Application to the Detection of HC$_{11}$N
论文作者
论文摘要
随着星际分子的库存持续增长，小物种之间的鸿沟可以通过射程望远镜观察到单个旋转线，而大型物种，例如通过红外和光学观察结果最好在散装中最好地研究的多环芳族碳氢化合物（PAHS）。了解这两个分子储层之间的联系对于理解星际碳循环至关重要，但需要突破我们可以探测分子复杂性多远的边界，同时仍保持观察性特异性。为此，我们提出了一种检测和表征单次观察中新分子物种的方法，该观测值朝着稀疏的线光谱来源。我们已经将此方法应用于正在进行的Gotham（TMC-1：狩猎芳香族分子的GBT观察结果）的数据中，绿色银行望远镜（GBT）大型程序发现了六种新的星际物种。在本文中，我们强调了HC $ _ {11} $ N的检测，这是星际介质中最大的cyanopolyne。
As the inventory of interstellar molecules continues to grow, the gulf between small species, whose individual rotational lines can be observed with radio telescopes, and large ones, such as polycyclic aromatic hydrocarbons (PAHs) best studied in bulk via infrared and optical observations, is slowly being bridged. Understanding the connection between these two molecular reservoirs is critical to understanding the interstellar carbon cycle, but will require pushing the boundaries of how far we can probe molecular complexity while still retaining observational specificity. Toward this end, we present a method for detecting and characterizing new molecular species in single-dish observations toward sources with sparse line spectra. We have applied this method to data from the ongoing GOTHAM (GBT Observations of TMC-1: Hunting Aromatic Molecules) Green Bank Telescope (GBT) large program, discovering six new interstellar species. In this paper we highlight the detection of HC$_{11}$N, the largest cyanopolyyne in the interstellar medium.
