A grid of model nebulae photoionized by a power-law continuum

Details A grid of model nebulae photoionized by a power-law continuum A grid of model nebulae photoionized by a power-law continuum

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26as...55...15s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 55, Jan. 1984, p. 15-32.

Astronomy and Astrophysics

Astrophysics

78

Astronomical Models, Gas Ionization, Interstellar Gas, Nebulae, Photoionization, Astronomical Spectroscopy, Computerized Simulation, Line Spectra, Power Spectra, Tables (Data), X Ray Sources

Scientific paper

A grid of self-consistent models for nebulae photoionized by power-law spectra is presented. The densities range from 100 to 1,000,000/cu cm. The power-law index of the radiation source varies from 2 to 0.7. The ionizing parameter U is generally chosen equal to 0.0001, 0.001, 0.01. The abundances of the heavy elements in the nebular gas (C, N, O, Ne, Mg, Si, S, Cl, Ar, Fe are considered) range from twice solar to 1/50-th solar. Resulting intensities are presented for over 100 lines in the UV, optical and IR wavelength range (the accuracy being strongly dependent on the quality of the atomic data available). Mean ionic temperatures and mean ionic fractions are also given for ions of interest.

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