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Soft X-ray emission lines of Fe VII-Fe XVI in stellar coronae in the range 49-106 angstrom
Liang, G. Y.1; Zhao, G.2
2010-07-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume405Issue:3Pages:1987-2000
AbstractObservational data for the cool star Procyon (Obs_IDs 63, 1461 and 1224) available from the Chandra Data Public Archive were co-added and analysed. Using the R-matrix excitation data generated under the auspices of previous Iron/Opacity and the ongoing Atomic Data for Astrophysical Plasma projects for n = 3 complexes, and up to n = 4 complexes for some ions, we derived line emissivities of highly charged iron ions (Fe VII-Fe XVI) over temperatures of abundant ionic stages in equilibrium. By combining the line emissivities with the emission measure presented by Raassen et al., theoretical line fluxes and line intensity ratios were predicted, and the theoretical spectra was constructed by assuming a Gaussian profile with instrumental broadening (0.06 angstrom). By making a detailed comparison between the observational results and predictions, some emission lines from iron ions in stellar coronae (including solar and Procyon) were identified for the first time, and some mis-assignments in the literature were found.
KeywordLine: Identification Methods: Analytical Stars: Coronae X-rays: General
DOI10.1111/j.1365-2966.2010.16593.x
Indexed BySCI
Language英语
WOS IDWOS:000279022900044
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7717
Collection光学天文研究部
Affiliation1.Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liang, G. Y.,Zhao, G.. Soft X-ray emission lines of Fe VII-Fe XVI in stellar coronae in the range 49-106 angstrom[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,405(3):1987-2000.
APA Liang, G. Y.,&Zhao, G..(2010).Soft X-ray emission lines of Fe VII-Fe XVI in stellar coronae in the range 49-106 angstrom.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,405(3),1987-2000.
MLA Liang, G. Y.,et al."Soft X-ray emission lines of Fe VII-Fe XVI in stellar coronae in the range 49-106 angstrom".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 405.3(2010):1987-2000.
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