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Spectral Data for Ta II with Application to the Tantalum Abundance in chi Lupi

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Author

  • Mattias Eriksson
  • Ulf Litzén
  • Glenn Wahlgren
  • D. S. Leckrone

Summary, in English

Tantalum spectra, emitted from a hollow cathode, have been recorded with a Fourier transform spectrometer in the region 2000–5000 Ů The observed hyperfine patterns of Ta II have been analyzed, yielding center-of-gravity wavelengths for 199 lines and hyperfine constants for 38 even and 97 odd levels of Ta II. Improved energy level values have been derived. The laboratory data have been used for a study of the tantalum abundance of the CP star chi Lupi.

Publishing year

2002

Language

English

Pages

480-489

Publication/Series

Physica Scripta

Volume

65

Issue

6

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Astronomy, Astrophysics and Cosmology

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-8949