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Title:Spectral Stacking And Matched Filtering As A Rigorous Detection Technique For Interstellar Molecules
Author(s):Loomis, Ryan A.
Contributor(s):Remijan, Anthony; McCarthy, Michael C.; McGuire, Brett A.; Kalenskii, Sergei; Herbst, Eric; Cordiner, Martin; Charnley, Steven B.; Shingledecker, Christopher N.; Burkhardt, Andrew M.; Xue, Ci; Lee, Kelvin
Abstract: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 probing topics such as 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 have developed a method for detecting and characterizing new molecular species in single-dish observations toward sources with sparse line spectra. Application of this method to data from the ongoing GOTHAM (GBT Observations of TMC-1: Hunting Aromatic Molecules) Green Bank Telescope (GBT) large program has resulted in ten new interstellar species detections thus far. In this talk, I present an overview of the method and demonstrate that it is a robust detection technique, highlighting both its strengths and limitations.
Issue Date:2021-06-24
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Date Available in IDEALS:2021-09-24

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