Non-LTE Treatment of Fe II in Astrophysical Plasmas

Details Non-LTE Treatment of Fe II in Astrophysical Plasmas Non-LTE Treatment of Fe II in Astrophysical Plasmas

1996-01-25

arxiv.org/abs/astro-ph/9601148v1

J. Quant. Spec. Rad. Transf. 54:987-999 (1995)

Astronomy and Astrophysics

Astrophysics

17 pages, latex, aip style, no figures included, full text with figures available at ftp://brian.la.asu.edu/pub/preprint/FeII-

Scientific paper

We describe our implementation of an extremely detailed model atom of singly ionized iron for NLTE computations in static and moving astrophysical plasmas. Our model atom includes 617 levels, 13675 primary permitted transitions and up to 1.2 million secondary transitions. Our approach guarantees that the total iron opacity is included at the correct wavelength with reasonable memory and CPU requirements. We find that the lines saturate the wavelength space, such that special wavelength points inserted along the detailed profile functions may be replaced with a statistical sampling method. We describe the results of various test calculations for novae and supernovae.

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