Experimental TiI oscillator strengths and their application to cool star analysis

R. J. Blackwell-Whitehead, Hans Lundberg, G. Nave, J. C. Pickering, H. R. A. Jones, Y. Lyubchik, Y. V. Pavlenko, S. Viti

Research output: Contribution to journalArticlepeer-review


We report experimental oscillator strengths for 88 Ti I transitions covering the wavelength range 465-3892 nm, 67 of which had no previous experimental values. Radiative lifetimes for 13 energy levels, including the low energy levels 3d(2)(F-3) 4s4p ((3)p) z(5)D(j)degrees have been measured using time-resolved laser-induced fluorescence. Intensity-calibrated Ti I spectra have been measured using Fourier transform spectroscopy to determine branching fractions for the decay channels of these levels. The branching fractions are combined with the radiative lifetimes to yield absolute transition probabilities and oscillator strengths. Our measurements include 50 transitions in the previously unobserved infrared region lambda > 1.0 mu m, a region of particular interest to the analysis of cool stars and brown dwarfs.
Original languageEnglish
Pages (from-to)1603-1609
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Publication statusPublished - 2006

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics

Free keywords

  • atomic data
  • techniques : spectroscopic
  • star : abundances


Dive into the research topics of 'Experimental TiI oscillator strengths and their application to cool star analysis'. Together they form a unique fingerprint.

Cite this