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Journal Articles The Astrophysical journal letters Year : 2017

ALMA Detection of Interstellar Methoxymethanol (CH3OCH2OH)

Brett A. Mcguire
  • Function : Correspondent author
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Christopher N. Shingledecker
  • Function : Author
Eric R. Willis
  • Function : Author
Andrew M. Burkhardt
  • Function : Author
Samer El-Abd
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Crystal L. Brogan
  • Function : Author
Todd R. Hunter
  • Function : Author
Robin T. Garrod
  • Function : Author
Eric Herbst
Anthony J. Remijan
  • Function : Author


We report the detection of interstellar methoxymethanol (CH3OCH2OH) in Atacama Large Millimeter/submillimeter Array (ALMA) Bands. 6 and. 7 toward the MM1 core in the high-mass star-forming region NGC 6334I at similar to 0 ''. 1-1 ''. spatial resolution. A column density of 4(2). x 10(18) cm(-2) at T-ex = 200 K is derived toward MM1, similar to 34. times less abundant than methanol (CH3OH), and significantly higher than predicted by astrochemical models. Probable formation and destruction pathways are discussed, primarily through the reaction of the CH3OH photodissociation products, the methoxy (CH3O) and hydroxymethyl (CH2OH) radicals. Finally, we comment on the implications of these mechanisms on gas-phase versus grain-surface routes operative in the region, and the possibility of electron-induced dissociation of CH3OH rather than photodissociation.

Dates and versions

hal-01685693 , version 1 (16-01-2018)



Brett A. Mcguire, Christopher N. Shingledecker, Eric R. Willis, Andrew M. Burkhardt, Samer El-Abd, et al.. ALMA Detection of Interstellar Methoxymethanol (CH3OCH2OH). The Astrophysical journal letters, 2017, 851 (2), pp.L46. ⟨10.3847/2041-8213/aaa0c3⟩. ⟨hal-01685693⟩
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