On the stability of interstellar carbon clusters: The rate of the reaction between C3 and O

David E. Woon, Eric Herbst

Research output: Contribution to journalArticlepeer-review

Abstract

New experimental results on the rates of selected neutral-neutral reactions involving either gas-phase atoms (C) or radicals (OH, CM) show that these reactions are much more rapid than previously believed. It is currently unclear, however, how general these results are. The results of chemical models of dense interstellar clouds are strongly affected by the inclusion of large numbers of rapid neutral-neutral gasphase reactions, most of which have not yet been studied in the laboratory. Unstudied reactions involving atomic oxygen and carbon clusters are known to curtail the synthesis of complex molecules if they occur rapidly at low temperatures. In this paper, using quantum chemical and dynamical studies, we show that the prototype reaction between O and C3 possesses a small activation energy barrier and does not occur rapidly at low temperatures, even when tunneling is considered.

Original languageEnglish (US)
Pages (from-to)795-799
Number of pages5
JournalAstrophysical Journal
Volume465
Issue number2 PART I
DOIs
StatePublished - Jan 1 1996
Externally publishedYes

Keywords

  • ISM: abundances
  • ISM: clouds
  • Molecular processes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'On the stability of interstellar carbon clusters: The rate of the reaction between C<sub>3</sub> and O'. Together they form a unique fingerprint.

Cite this