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Observational constraints on the formation of interstellar methanol

Published online by Cambridge University Press:  01 February 2008

E. S. Wirström ,
C. M. Persson ,
Å. Hjalmarson ,
J. H. Black ,
P. Bergman ,
W. D. Geppert ,
M. Hamberg  and
E. Vigren
E. S. Wirström
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, SE-43992 Onsala, Sweden email: eva.wirstrom@chalmers.se
C. M. Persson
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, SE-43992 Onsala, Sweden email: eva.wirstrom@chalmers.se
Å. Hjalmarson
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, SE-43992 Onsala, Sweden email: eva.wirstrom@chalmers.se
J. H. Black
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, SE-43992 Onsala, Sweden email: eva.wirstrom@chalmers.se
P. Bergman
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, SE-43992 Onsala, Sweden email: eva.wirstrom@chalmers.se ESO, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago, Chile
W. D. Geppert
Affiliation:
Physics Department, Stockholm University, S-10691 Stockholm, Sweden
M. Hamberg
Affiliation:
Physics Department, Stockholm University, S-10691 Stockholm, Sweden
E. Vigren
Affiliation:
Physics Department, Stockholm University, S-10691 Stockholm, Sweden
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Abstract

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The processes by which methanol, one of the most abundant interstellar organics, is formed in the interstellar medium are not yet accurately known. Pure gas-phase chemistry models fail to reproduce observed abundances by orders of magnitude, pointing to formation on grains and subsequent desorption.

Observations of methanol and its isotopologue 13CH3OH in several sources have been used to trace the origin, and thus the formation routes of methanol on interstellar grains, by means of isotope labelling a posteriori.

Keywords

AstrochemistryISM: moleculesISM: abundancesradio lines: ISMsubmillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 143 - 144
Copyright
Copyright © International Astronomical Union 2008

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