Reference ultraviolet wavelengths of CrIII measured by Fourier transform spectrometry

Details Reference ultraviolet wavelengths of CrIII measured by Fourier transform spectrometry Reference ultraviolet wavelengths of CrIII measured by Fourier transform spectrometry

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.390..733s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 390, Issue 2, pp. 733-740.

Astronomy and Astrophysics

Astronomy

4

Atomic Data, Line: Identification, Methods: Laboratory

Scientific paper

We report CrIII 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 3d34s-3d34p CrIII transition lines, in the spectral range 38000 to 49000 cm-1 (2632 to 2041 Å), the strongest having wavelength uncertainties less than one part in 107, are presented.

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