Emission-line ratios at high densities

Details Emission-line ratios at high densities Emission-line ratios at high densities

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361...40z&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Sept. 20, 1990, p. 40-48. Research supported by the Lawrence Livermore

Astronomy and Astrophysics

Astrophysics

10

Active Galactic Nuclei, Emission Spectra, Line Spectra, Particle Density (Concentration), Photoionization, Balmer Series, Carbon, Continuous Spectra, Forbidden Transitions, Lyman Alpha Radiation, Spectrum Analysis

Scientific paper

Photoionization calculations are used here to study the density dependence of important emission lines for nucleon densities significantly greater than those considered standard. It is found that strong permitted emission lines suffer depression of their emissivity due to photon trapping and collisional destruction. Hydrogen continuum emission and some weak lines of heavy elements become more prominent at n(e) greater than 10 to the 10th/cu cm as they become increasingly important coolants. At high density and column mass, the Balmer decrement flattens because of the significant population in excited states of hydrogen. The results suggest that high-density, large column mass clouds could contribute an appreciable fraction of the observed Balmer line flux.

Affiliated with

Also associated with

No associations

Rating

Emission-line ratios at high densities 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 Emission-line ratios at high densities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emission-line ratios at high densities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1401389