ALMA Detection of Interstellar Methoxymethanol ...
Type de document :
Compte-rendu et recension critique d'ouvrage
DOI :
Titre :
ALMA Detection of Interstellar Methoxymethanol (CH3OCH2OH)
Auteur(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]
Titre de la revue :
The Astrophysical journal letters
Pagination :
L46
Éditeur :
Bristol : IOP Publishing
Date de publication :
2017
ISSN :
2041-8205
Mot(s)-clé(s) en anglais :
astrochemistry
ISM: individual objects (NGC 6334I)
ISM: molecules
ISM: individual objects (NGC 6334I)
ISM: molecules
Discipline(s) HAL :
Chimie
Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >
Lire la suite >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.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
Fichiers
- http://arxiv.org/pdf/1712.03256
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- 1712.03256
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