On the Need for Spectroscopic Data in Ultraviolet Stellar Spectral Synthesis Calculations

A general discussion of the quality of spectroscopic data for ultraviolet (less than 3000 A) spectral synthesis calculations is presented. It is pointed out that progress in the generation of complete and accurate lists of atomic lines, and in the computation and measurement of accurate transition p...

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Bibliographic Details
Published inPhysica scripta Vol. 1984; pp. 25 - 27
Main Authors Adelman, Saul J, Leckrone, David S
Format Journal Article
LanguageEnglish
Published Legacy CDMS IOP Publishing 01.01.1984
Subjects
Astrophysics
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Summary:A general discussion of the quality of spectroscopic data for ultraviolet (less than 3000 A) spectral synthesis calculations is presented. It is pointed out that progress in the generation of complete and accurate lists of atomic lines, and in the computation and measurement of accurate transition probabilities of the spectra of many elements is lagging behind current and near-term observational capabilities. Theoretical syntheses of the line profiles in the spectra of three middle-to-late B type stars (Pi Cet, 134 Tau, and vCap) are computed. The computations are found to be complicated and ambiguous due to the low accuracy of the oscillator strengths used in the analysis. Some characteristics of star-to-star variations in elemental abundances are discussed.
Bibliography:CDMS
Legacy CDMS
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ISSN:1402-4896
0031-8949
1402-4896
DOI:10.1088/0031-8949/1984/T8/004