Journal
NATURE ASTRONOMY
Volume 5, Issue 2, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41550-020-01261-4
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Funding
- Smithsonian Institution
- NSF [AST-1615847]
- NASA [80NSSC18K0396, NAS5-26555]
- NASA through Hubble Fellowship - Space Telescope Science Institute [HST-HF2-51396]
- Alexander von Humboldt Stiftung/Foundation
- NSF through the Grote Reber Fellowship Program
- National Science Foundation [AST 1906489]
- NASA Astrobiology Institute through the Goddard Center for Astrobiology
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Understanding the growth of interstellar molecular inventory and the methods for detecting and studying interstellar molecular species are crucial for understanding the interstellar carbon cycle.
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 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. Towards this end, we present a method for detecting and characterizing new molecular species in single-dish observations towards 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 large programme, discovering six new interstellar species. Here we highlight the detection of HC11N, the largest cyanopolyyne in the interstellar medium.
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