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    Nitric Oxide and Other Molecules: Molecular Modeling and Low-frequency Exploration Using the Murchison Widefield Array

    91601.pdf (16.91Mb)
    Access Status
    Open access
    Authors
    Tremblay, C.D.
    Gray, M.D.
    Hurley-Walker, Natasha
    Green, J.A.
    Dawson, J.R.
    Dickey, J.M.
    Jones, P.A.
    Tingay, Steven
    Wong, O.I.
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Tremblay, C.D. and Gray, M.D. and Hurley-Walker, N. and Green, J.A. and Dawson, J.R. and Dickey, J.M. and Jones, P.A. et al. 2020. Nitric Oxide and Other Molecules: Molecular Modeling and Low-frequency Exploration Using the Murchison Widefield Array. Astrophysical Journal. 905 (1): ARTN 65.
    Source Title
    Astrophysical Journal
    DOI
    10.3847/1538-4357/abc33a
    ISSN
    0004-637X
    Faculty
    Faculty of Science and Engineering
    School
    School of Elec Eng, Comp and Math Sci (EECMS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FT190100231
    URI
    http://hdl.handle.net/20.500.11937/91777
    Collection
    • Curtin Research Publications
    Abstract

    We present new molecular modeling for 14NO and 15NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses 4 times more data (17 hr versus 4 hr) and is 3 times better in angular resolution (1′ versus 3′). The new molecular modeling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher-frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array and places solid limits on what is expected in the future of low-frequency surveys. The modeling can be utilized for future searches of nitric oxide.

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