Density Dependence of the Detailed Spectral Line Effects on the Opacity of Astrophysical Abundant Elements: Oxygen
WANG Fei-Lu1, ZHAO Gang1, YUAN Jian-Min1,2
1National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
2Department of Applied Physics, National University of Defense Technology, Changsha 410073
Density Dependence of the Detailed Spectral Line Effects on the Opacity of Astrophysical Abundant Elements: Oxygen
WANG Fei-Lu1;ZHAO Gang1;YUAN Jian-Min1,2
1National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
2Department of Applied Physics, National University of Defense Technology, Changsha 410073
Abstract： A full relativistic detailed-level-accounting approach has been developed independently to deal with the detailed spectral line effects on the opacity of the third most abundant element in stars: oxygen. The atomic energy levels and the oscillator strengths of the radiative transitions between the energy levels are obtained by carrying out the full relativistic one-configuration Dirac-Fock calculations. The photoionization cross sections are obtained via an average atom scheme with a consideration for the splitting of the ionization threshold due to the ionization stages and the term-couplings. As an example, the spectra resolved opacities and the mean opacities of oxygen are calculated to show the importance of the detailed spectral line profiles with the density of the matter.
(Emission, absorption, and scattering of electromagnetic radiation ?)
引用本文:
WANG Fei-Lu;ZHAO Gang;YUAN Jian-Min;. Density Dependence of the Detailed Spectral Line Effects on the Opacity of Astrophysical Abundant Elements: Oxygen[J]. 中国物理快报, 2003, 20(10): 1887-1890.
WANG Fei-Lu, ZHAO Gang, YUAN Jian-Min,. Density Dependence of the Detailed Spectral Line Effects on the Opacity of Astrophysical Abundant Elements: Oxygen. Chin. Phys. Lett., 2003, 20(10): 1887-1890.
2003, Vol. 20 
