| Issue |
A&A
Volume 399, Number 2, February IV 2003
|
|
|---|---|---|
| Page(s) | 583 - 587 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20021533 | |
| Published online | 07 February 2003 | |
Complex bifurcations in interstellar chemistry?
1
Space Science Division, NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035, USA e-mail: charnley@dusty.arc.nasa.gov
2
Department of Physics, UMIST, PO Box 88, Manchester M60 1QD, UK
Corresponding author: A. J. Markwick, ajm@ajmarkwick.com
Received:
6
November
2001
Accepted:
21
October
2002
Bifurcation diagrams for the steady-state chemical abundances of dense molecular gas have been computed in the region of parameter space where bistable solutions are known to occur. Despite the appearance of many exotic bifurcations, which could be interpreted as sections though higher dimensional catastrophes, we show that they are fundamentally projection effects of the same basic bifurcation, which is an hysteresis loop.
Key words: ISM: abundances / ISM: molecules / molecular processes
© ESO, 2003
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