Atomic Data For Determining Abundances In Interstellar Clouds

Details Atomic Data For Determining Abundances In Interstellar Clouds Atomic Data For Determining Abundances In Interstellar Clouds

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..926..190f&link_type=abstract

ATOMIC PROCESSES IN PLASMAS: 15th International Conference on Atomic Processes in Plasmas. AIP Conference Proceedings, Volume 9

Statistics

Computation

Molecular Clouds, H2 Clouds, Dense Clouds, And Dark Clouds, Oscillator Strengths, Lifetimes, Transition Moments, Visible And Ultraviolet Spectra

Scientific paper

Chemical abundances in interstellar clouds are used to examine processes taking place in this environment, to extract gas density and pressure, and to infer astronomical sources for the synthesis of nuclei. The derivation of abundances from absorption lines at ultraviolet and visible wavelengths relies on knowledge of oscillator strengths. I will discuss our multi-pronged approach involving laboratory measurements, interstellar observations, and theoretical computations for determining oscillator strengths. Results for atoms and ions of chlorine, magnesium, carbon, and phosphorus will be presented. Comparisons with other results will highlight where consensus has been achieved and where further work is needed.

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