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Reference Ultraviolet Wavelengths of Cr III Measured by Fourier Transform SpectrometryWe report Cr III ultraviolet (UV) transition wavelengths measured using a high-resolution Fourier transform spectrometer (FTS), for the first time, available for use as wavelength standards. The doubly ionized iron group element spectra dominate the observed opacity of hot B stars in the UV, and improved, accurate, wavelengths are required for the analysis of astronomical spectra. The spectrum was excited using a chromium-neon Penning discharge lamp and measured with the Imperial College vacuum ultraviolet FTS. 140 classified 3d(exp 3)4s- 3d(exp 3)4p Cr III transition lines, in the spectral range 38,000 to 49,000 cm(exp -1) (2632 to 2041 A), the strongest having wavelength uncertainties less than one part in 10(exp 7), are presented.
Document ID
20090010529
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Smillie, D.G.
(Imperial Coll. of London London, United Kingdom)
Pickering, J.C.
(Imperial Coll. of London London, United Kingdom)
Smith, P.L.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Publication Information
Publication: Monthly Notices of the Royal Astronomical Society
Publisher: Wiley (John) and Sons, Inc.
Volume: 390
Issue: 2
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAG5-12668
Distribution Limits
Public
Copyright
Other

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