EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 399/2 Article
Free access article

Issue A&A
Volume 399, Number 2, February IV 2003
Page(s) 583 - 587
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20021533



A&A 399, 583-587 (2003)
DOI: 10.1051/0004-6361:20021533

Complex bifurcations in interstellar chemistry?

S. B. Charnley1 and A. J. Markwick2

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

(Received 6 November 2001 / Accepted 21 October 2002)

Abstract
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

Offprint request: A. J. Markwick, ajm@ajmarkwick.com




© ESO 2003


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.