Large molecules in diffuse interstellar clouds

Details Large molecules in diffuse interstellar clouds Large molecules in diffuse interstellar clouds

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...329..418l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 329, June 1, 1988, p. 418-424.

Other

79

Abundance, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Aromatic Compounds, Cyclic Hydrocarbons, Interstellar Extinction, Ophiuchi Clouds, Reaction Kinetics

Scientific paper

The effects of the presence of a substantial component of large molecules on the chemistry of diffuse molecular clouds are explored, and detailed models of the zeta Persei and zeta Ophiuchi clouds are constructed. The major consequence is a reduction in the abundances of singly charged atomic species. The long-standing discrepancy between cloud densities inferred from rotational and fine-structure level populations and from the ionization balance can be resolved by postulating a fractional abundance of large molecules of 1 x 10 to the -7th for zeta Persei and 6 x 10 to the -7th for zeta Ophiuchi. If the large molecules are polycyclic aromatic hydrocarbons (PAH) containing about 50 carbon atoms, they contain 1 percent of the carbon in zeta Persei and 7 percent in zeta Ophiuchi. Other consequences of the possible presence of PAH molecules are discussed.

Affiliated with

Also associated with

No associations

Rating

Large molecules in diffuse interstellar clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Large molecules in diffuse interstellar clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large molecules in diffuse interstellar clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1177716