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    A Molecular Line Survey around Orion at Low Frequencies with the MWA

    267758.pdf (1.398Mb)
    Access Status
    Open access
    Authors
    Tremblay, C.
    Jones, P.
    Cunningham, M.
    Hurley-Walker, Natasha
    Jordan, Christopher
    Tingay, Steven
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Tremblay, C. and Jones, P. and Cunningham, M. and Hurley-Walker, N. and Jordan, C. and Tingay, S. 2018. A Molecular Line Survey around Orion at Low Frequencies with the MWA. Astrophysical Journal. 860 (2): Article ID 145.
    Source Title
    Astrophysical Journal
    DOI
    10.3847/1538-4357/aac3e1
    ISSN
    0004-637X
    School
    Curtin Institute of Radio Astronomy (Physics)
    Remarks

    Copyright © 2018 The American Astronomical Society. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/69701
    Collection
    • Curtin Research Publications
    Abstract

    The low-frequency sky may reveal some of the secrets yet to be discovered. Until recently, molecules had never been detected within interstellar clouds at frequencies below 700 MHz. Following the pilot survey toward the Galactic center at 103-133 MHz with the Murchison Widefield Array, we surveyed 400 deg2centered on the Orion KL nebula from 99 to 170 MHz. Orion is a nearby region of active star formation and known to be a chemically rich environment. In this paper, we present tentative detections of nitric oxide and its isotopologues, singularly deuterated formic acid, molecular oxygen, and several unidentified transitions. The three identified molecules are particularly interesting, as laboratory experiments have suggested that these molecules are precursors to the formation of amines.

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