Ion-molecule chemistry of dense interstellar clouds - Nitrogen-, oxygen-, and carbon-bearing molecule abundances and isotopic ratios

Journal Article · Tue Jan 31 23:00:00 EST 1989 · Astrophys. J., Suppl. Ser.; (United States)

DOI:https://doi.org/10.1086/191313· OSTI ID:6250402

Langer, W D; Graedel, T E

Revised time-dependent models of the ion-molecule chemistry of dense interstellar clouds (Graedel, Langer, and Frerking, 1982) are used to calculate the abundances of key observational species used to interpret cloud properties and study interstellar chemistry. Consideration is given to nitrogen-, oxygen-, and carbon-bearing molecules and isotopic ratios over a hydrogen density range of 1,000-50,000/cu cm and a temperature range of 10-40 K. The results for over 15 species, including C-13 variants, are presented in tables and graphs. The results are compared to abundance observations in TMC-1 and other interstellar clouds, showing that most observed abundances can be predicted by the models. 72 references.

• Research Organization: AT and T Bell Laboratories, Murray Hill, NJ (USA)
• OSTI ID: 6250402
• Journal Information: Astrophys. J., Suppl. Ser.; (United States), Journal Name: Astrophys. J., Suppl. Ser.; (United States) Vol. 69; ISSN APJSA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CARBON
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMISTRY
COSMIC GASES
COSMOCHEMISTRY
DISSOCIATION
ELEMENTS
FLUIDS
GASES
INTERSTELLAR SPACE
IONS
ISOTOPE RATIO
ISOTOPES
KINETICS
MOLECULES
NITROGEN
NONMETALS
OXYGEN
REACTION KINETICS
SPACE
TIME DEPENDENCE