Keywords

atomic data, ISM, abundances, ultraviolet, laboratory

Abstract

We report the first measurements of UV oscillator strengths (ƒ-values) in Fe II from a high-sensitivity absorption experiment developed at the University of Wisconsin. The accuracy of our measurements is demonstrated by our reproducing well-known ƒ-value ratios in Fe I and Fe II. The first laboratory ƒ-value measurement of the 160.845 nm transition in Fe II is presented and compared to values in the literature. While this paper focuses on Fe II, the high-sensitivity absorption method that we have developed is applicable to essentially every element in the periodic table, for both neutral and ionized species, over a broad range of wavelength and line strength.

Original Publication Citation

S. D. Bergeson, K. L. Mullman, and J. E. Lawler. High-sensitivity absorption spectroscopy in Fe II. Astrophys. J. 464 (2), 1050-1053 (1996).

Document Type

Peer-Reviewed Article

Publication Date

1996

Publisher

American Astronomical Society

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

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