Early Science from GOTHAM: Project Overview, Methods, and the Detection of Interstellar Propargyl Cyanide (HCCCH$_2$CN) in TMC-1. (arXiv:2008.12349v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+McGuire_B/0/1/0/all/0/1">Brett A. McGuire</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burkhardt_A/0/1/0/all/0/1">Andrew M. Burkhardt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Loomis_R/0/1/0/all/0/1">Ryan A. Loomis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shingledecker_C/0/1/0/all/0/1">Christopher N. Shingledecker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lee_K/0/1/0/all/0/1">Kin Long Kelvin Lee</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Charnley_S/0/1/0/all/0/1">Steven B. Charnley</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cordiner_M/0/1/0/all/0/1">Martin A. Cordiner</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Herbst_E/0/1/0/all/0/1">Eric Herbst</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kalenskii_S/0/1/0/all/0/1">Sergei Kalenskii</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Momjian_E/0/1/0/all/0/1">Emmanuel Momjian</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Willis_E/0/1/0/all/0/1">Eric R. Willis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Xue_C/0/1/0/all/0/1">Ci Xue</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Remijan_A/0/1/0/all/0/1">Anthony J. Remijan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+McCarthy_M/0/1/0/all/0/1">Michael C. McCarthy</a>
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.
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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