来自GOTHAM的早期科学:项目概述、方法和在TMC-1中探测星际炔丙基氰化物(HCCCH $_2$ CN)
Early Science from GOTHAM: Project Overview, Methods, and the Detection of Interstellar Propargyl Cyanide (HCCCH$_2$CN) in TMC-1
摘要:
我们提出了一个概述GOTHAM(TMC-1的GBT观测:狩猎芳香分子)的绿色银行望远镜大计划。这一计划和一个相关的计划是为了探索在恒星形成的最早阶段星际介质中芳香族化学的深度和广度,此前我们在TMC-1中检测到苯甲腈($c$ -C $_6$ H $_5$ CN)。在这项工作中,提供的意见,使用档案数据和数据减少策略的细节。利用这些观测,星际探测炔丙基氰(HCCCH $_2$ CN)的描述,以及伴随的实验室光谱。我们讨论了这些结果,并作为一个整体的调查项目,在调查的背景下,以前未开发的复杂的,气相分子的前恒星源的水库。一系列的配套论文描述了其他新的天文探测和分析。
英文摘要:
We present an overview of the GOTHAM (GBT Observations of TMC-1: Hunting Aromatic Molecules) Large Program on the Green Bank Telescope. This and a related program were launched to explore the depth and breadth of aromatic chemistry in the interstellar medium at the earliest stages of star formation, following our earlier detection of benzonitrile ($c$-C$_6$H$_5$CN) in TMC-1. In this work, details of the observations, use of archival data, and data reduction strategies are provided. Using these observations, the interstellar detection of propargyl cyanide (HCCCH$_2$CN) is described, as well as the accompanying laboratory spectroscopy. We discuss these results, and the survey project as a whole, in the context of investigating a previously unexplored reservoir of complex, gas-phase molecules in pre-stellar sources. A series of companion papers describe other new astronomical detections and analyses.
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