Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..651a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 186, Mar. 1979, p. 651-655. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
20
Astronomical Spectroscopy, Atomic Excitations, Atomic Spectra, Iron, Oscillators, Absorption Spectra, Furnaces, Line Spectra, Pyrometers, Spectral Line Width
Scientific paper
A photoelectric pyrometer has been built and used to measure the temperature of the Oxford spectroscopic furnace on the International Practical Temperature Scale 1968 to an accuracy of + or - 1 K (3 sigma). Measurements have been made of the relative oscillator strengths of Fe I absorption lines originating from energy levels separated by about 1 eV. These measures have an accuracy of about 0.5 percent and are intended to link existing measures made at Oxford from levels a5 F(1-5) (0.86-1.01 eV) to measures made from levels a5 D(0-4) (0.00-0.12 eV).
Andrews J. W.
Blackwell D. E.
Coates P. B.
Petford A. D.
Shallis M. J.
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