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A grid of synthetic ionizing spectra for very hot compact stars from NLTE model atmospheres
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A grid of synthetic ionizing spectra for very hot compact stars from NLTE model atmospheres
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The precise analysis of properties of planetary nebulae is strongly dependent on good models for the stellar ionizing spectrum. Observations in the UV - X-ray wavelength range as well as NLTE model atmosphere calculations of spectra of their exciting stars have shown that neither blackbody fluxes nor "standard" NLTE atmosphere models which are composed out of hydrogen and helium only are good approximations. Strong differences between synthetic spectra from these compared to observed spectra at energies higher than 54 eV (He II ground state) can be ascribed to the neglect of metal-line blanketing. Realistic modeling of the emergent fluxes of hot stars in the UV - X-ray wavelength range requires metal-line blanketed NLTE model atmospheres which include all elements from hydrogen up to the iron-group. For this purpose, we present a grid (solar and halo abundance ratios) of metal-line blanketed NLTE model atmosphere fluxes which covers the parameter range of central stars of planetary nebulae.
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Cited by 1 Pith paper
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Physics of Eclipsing Binaries. VI. Hot, compact stars
PHOEBE 2.5 incorporates TMAP and Tremblay atmospheres, atmosphere blending, and derived limb-darkening tables to model hot compact stars in eclipsing binaries without blackbody fallback.
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