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2007MNRAS.382..733R - Mon. Not. R. Astron. Soc., 382, 733-742 (2007/December-1)
Desorption from interstellar ices.
ROBERTS J.F., RAWLINGS J.M.C., VITI S. and WILLIAMS D.A.
Abstract (from CDS):
Employing a chemical model of a typical static molecular core and using likely estimates for the quantum yields of the three processes, we find that desorption by H2 formation probably dominates over the other two mechanisms. However, the physics of the desorption processes and the nature of the dust grains and ice mantles are very poorly constrained. We therefore conclude that the best approach is to set empirical constraints on the desorption, based on observed molecular depletions - rather than try to establish the desorption efficiencies from purely theoretical considerations. Applying this method to one such object (L1689B) yields upper limits to the desorption efficiencies that are consistent with our understanding of these mechanisms.
Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS
Journal keyword(s): astrochemistry - molecular processes - stars: formation - ISM: abundances - dust, extinction - ISM: molecules
Simbad objects: 11
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