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

doi:10.1111/j.1365-2966.2006.11161.x

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

Atomic Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	1603-1609
Journal	Monthly Notices of the Royal Astronomical Society
Volume	373
Issue number	4
DOIs	https://doi.org/10.1111/j.1365-2966.2006.11161.x
Publication status	Published - 2006

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

Free keywords

atomic data
techniques : spectroscopic
star : abundances

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10.1111/j.1365-2966.2006.11161.x

Cite this

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title = "Experimental TiI oscillator strengths and their application to cool star analysis",

abstract = "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.",

keywords = "atomic data, techniques : spectroscopic, star : abundances",

author = "Blackwell-Whitehead, {R. J.} and Hans Lundberg and G. Nave and Pickering, {J. C.} and Jones, {H. R. A.} and Y. Lyubchik and Pavlenko, {Y. V.} and S. Viti",

year = "2006",

doi = "10.1111/j.1365-2966.2006.11161.x",

language = "English",

volume = "373",

pages = "1603--1609",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

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TY - JOUR

T1 - Experimental TiI oscillator strengths and their application to cool star analysis

AU - Blackwell-Whitehead, R. J.

AU - Lundberg, Hans

AU - Nave, G.

AU - Pickering, J. C.

AU - Jones, H. R. A.

AU - Lyubchik, Y.

AU - Pavlenko, Y. V.

AU - Viti, S.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - atomic data

KW - techniques : spectroscopic

KW - star : abundances

U2 - 10.1111/j.1365-2966.2006.11161.x

DO - 10.1111/j.1365-2966.2006.11161.x

M3 - Article

SN - 1365-2966

VL - 373

SP - 1603

EP - 1609

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Experimental TiI oscillator strengths and their application to cool star analysis

Abstract

Subject classification (UKÄ)

Free keywords

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