ALMA Detection of Interstellar Methoxymethanol ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
ALMA Detection of Interstellar Methoxymethanol (CH3OCH2OH)
Author(s) :
Mcguire, Brett A. [Auteur correspondant]
Shingledecker, Christopher N. [Auteur]
Willis, Eric R. [Auteur]
Burkhardt, Andrew M. [Auteur]
El-Abd, Samer [Auteur]
Motiienko, Roman [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Brogan, Crystal L. [Auteur]
Hunter, Todd R. [Auteur]
Margulès, Laurent [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Guillemin, Jean-Claude [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Garrod, Robin T. [Auteur]
Herbst, Eric [Auteur]
Remijan, Anthony J. [Auteur]
Shingledecker, Christopher N. [Auteur]
Willis, Eric R. [Auteur]
Burkhardt, Andrew M. [Auteur]
El-Abd, Samer [Auteur]
Motiienko, Roman [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Brogan, Crystal L. [Auteur]
Hunter, Todd R. [Auteur]
Margulès, Laurent [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Guillemin, Jean-Claude [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Garrod, Robin T. [Auteur]
Herbst, Eric [Auteur]
Remijan, Anthony J. [Auteur]
Journal title :
The Astrophysical journal letters
Pages :
L46
Publisher :
Bristol : IOP Publishing
Publication date :
2017
ISSN :
2041-8205
English keyword(s) :
astrochemistry
ISM: individual objects (NGC 6334I)
ISM: molecules
ISM: individual objects (NGC 6334I)
ISM: molecules
HAL domain(s) :
Chimie
English abstract : [en]
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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Popular science :
Non
Source :
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- http://arxiv.org/pdf/1712.03256
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- 1712.03256
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