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

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

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15 Citations (SciVal)

Abstract

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.
Original languageEnglish
Pages (from-to)480-489
JournalPhysica Scripta
Volume65
Issue number6
DOIs
Publication statusPublished - 2002

Subject classification (UKÄ)

  • Astronomy, Astrophysics and Cosmology

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