Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.247..611s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 247, Dec. 15, 1990, p. 611-623. NSERC-supported researc
Astronomy and Astrophysics
Astrophysics
31
Chromium, Line Spectra, Oscillator Strengths, Stellar Spectra, Visible Spectrum, A Stars, Calibrating, Iron, Reference Stars, Stellar Atmospheres
Scientific paper
After deriving astrophysical oscillator strengths for a number of spectral lines of Fe II and Cr II in the 4050-4650 A bandpass, as well as for several lines of Fe I and Cr I, from high S/N spectra of Alpha Lyr and Iota CrB, these data are placed on the absolute scale defined by solar spectrum-derived astrophysical oscillator strengths, together with the Wujec and Weniger (1981) data and the calculations of Kurucz (1981). All these data are found to be in substantial agreement, and are used to define a new set of oscillator strengths whose relative errors are substantially below 0.1 dex, together with an absolute calibration index of no more than 0.15 dex.
Landstreet John Darlington
Sigut Thomas Allan Aaron
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