Emission-Line Spectra of S VII-S XIV in the 20-75 Å Wavelength Region
Emission-Line Spectra of S VII-S XIV in the 20-75 Å Wavelength Region
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DOI:
10.1086/429879
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发表时间:
2005-06
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影响因子:
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通讯作者:
J. Lepson;P. Beiersdorfer;E. Behar;S. Kahn
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文献类型:
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作者:
J. Lepson;P. Beiersdorfer;E. Behar;S. Kahn
As part of a larger project to complete a comprehensive catalog of astrophysically relevant emission lines in support of new-generation X-ray observatories using the Lawrence Livermore electron beam ion traps EBIT-I and EBIT-II, we present observations of sulfur lines in the soft X-ray and extreme-ultraviolet regions. Our database includes wavelength measurements with standard errors, relative intensities, and line assignments for 127 transitions of S VII through S XIV between 20 and 75 Å. The experimental data are complemented with a full set of calculations using the Hebrew University Lawrence Livermore Atomic Code (HULLAC). A comparison of the laboratory data with Chandra measurements of Procyon allows us to identify S VII-S XI lines.