Keywords

atomic data, sun, abundances

Abstract

Transition probabilities of 100 Ti-II emission lines, originating from 7 different atomic levels, have been determined by combining branching fractions with radiative lifetimes. The branching fractions were meaures using Fourier transform spectroscopy on a hollow cathode. The radiative lifetimes of these 7 – and 35 additional – levels were measured using time resolved laser-induced fluorescence on a slow Ti ion beam. The transition probabilities of 21 very weak lines have been used to derive a solar titanium abundance of aTi=log(NTi/NH)+12=5.04±0.04 dex, which is insensitive to the solar model. This value is in disagreement with the meteoritic titanium abundance (4.93 ± 0.02).

Original Publication Citation

A. Bizzarri, M. C. E. Huber, A. Noels, N. Grevesse, S. D. Bergeson, P. Tsekeris, and J. E. Lawler. Ti-ii transition probabilities and radiative lifetimes in TI and the solar titanium abundance. Astron. Astrophys. 273 (2), 707-718 (1993).

Document Type

Peer-Reviewed Article

Publication Date

1993

Publisher

American Astronomical Society

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

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