New Bistable Solutions in Molecular Cloud Chemistry: Nitrogen and Carbon Autocatalysis

Both observational and theoretical studies of molecular cloud chemistry are hindered by many difficulties which are partially circumvented by studying the relative abundances of isomers synthesized from a common set of chemical precursors. Theoretical studies aimed at understanding interstellar abundance ratios for the isomers HCN/HNC, HCO+/HOC+, CH3CN/CH3NC, and C3H2 have been performed.

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MOLECULAR CLOUD CHEMISTRY AND THE IMPORTANCE OF DIELECTRONIC RECOMBINATION

The Astrophysical Journal ◽

10.1088/0004-637x/694/1/286 ◽

2009 ◽

Vol 694 (1) ◽

pp. 286-293 ◽

Cited By ~ 12

Author(s):

P. Bryans ◽

H. Kreckel ◽

E. Roueff ◽

V. Wakelam ◽

D. W. Savin

Keyword(s):

Molecular Cloud ◽

Dielectronic Recombination ◽

Cloud Chemistry

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Molecular cloud chemistry — the abundant elements in grains

Molecular Clouds in the Milky Way and External Galaxies - Lecture Notes in Physics ◽

10.1007/3-540-50438-9_253 ◽

2008 ◽

pp. 151-165 ◽

Cited By ~ 1

Author(s):

Roger Knacke

Keyword(s):

Molecular Cloud ◽

Cloud Chemistry

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Molecular Cloud Chemistry

Astrophysics and Space Science Library - Millimetre and Submillimetre Astronomy ◽

10.1007/978-94-009-3019-3_4 ◽

1988 ◽

pp. 117-164 ◽

Cited By ~ 11

Author(s):

E. F. van Dishoeck

Keyword(s):

Molecular Cloud ◽

Cloud Chemistry

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Insights on molecular cloud structure

Proceedings of the International Astronomical Union ◽

10.1017/s1743921311000238 ◽

2010 ◽

Vol 6 (S270) ◽

pp. 99-102

Author(s):

João Alves ◽

Marco Lombardi ◽

Charles Lada

Keyword(s):

Molecular Cloud ◽

Molecular Hydrogen ◽

Molecular Clouds ◽

Dust Emission ◽

Tracer Technique ◽

Cloud Chemistry ◽

Molecular Line ◽

Dust Extinction ◽

Dust Grain ◽

Grain Properties

AbstractStars form in the densest regions of clouds of cold molecular hydrogen. Measuring structure in these clouds is far from trivial as 99% of the mass of a molecular cloud is inaccessible to direct observation. Over the last decade we have been developing an alternative, more robust density tracer technique based on dust extinction measurements towards background starlight. The new technique does not suffer from the complications plaguing the more conventional molecular line and dust emission techniques, and when used with these can provide unique views on cloud chemistry and dust grain properties in molecular clouds. In this brief communication we summarize the main results achieved so far using this technique.

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