Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000iaus..195..423r&link_type=abstract
Highly Energetic Physical Processes and Mechanisms for Emission from Astrophysical Plasmas, Proceedings of IAU Symposium #195, h
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
Present observational techniques provide stellar spectra with high resolution at a high signal-to-noise ratio over the complete wavelength range---from the far infrared to X-rays. The effects of Non-``Local Thermal Equilibrium'' (NLTE) are particularly important for hot stars, hence the use of reliable NLTE stellar model atmosphere fluxes is required for an adequate spectral analysis. State-of-the-art NLTE model atmospheres include metal-line blanketing of millions of lines of all elements from hydrogen up to the iron-group elements, and thus permit precise analyses of extremely hot compact stars, e.g., central stars of planetary nebulae, PG 1159 stars, white dwarfs, and neutron stars. Their careful spectroscopic study is of great interest in several branches of modern astrophysics, e.g., stellar and galactic evolution, and interstellar matter.
Deetjen Jochen L.
Dreizler Stefan
Rauch Thomas
Werner Kirstin
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