Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/6/6010/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp


VI/10              Semiempirical gf Values                       (Kurucz + 1975)
================================================================================
A Table of Semiempirical gf Values
    Kurucz R.L., Peytremann E.
    <SAO Spec. Report No. 362 (1975)>
    1975SAOSR.362.....K
================================================================================
ADC_Keywords: Abundances; Atomic physics

Abstract:
   This table of gf values for 265,587 atomic lines is selected from the line 
   data used to calculate line-blanketed model atmospheres (Kurucz et al. 1974).
   The data are especially useful for line identification and spectral synthesis
   in solar and stellar spectra. Except for 10,100 lines taken from the liter-
   ature, the gf values have been calculated semiempirically by using scaled
   Thomas-Fermi-Dirac radial wavefunctions and eigenvectors found through 
   least-squares fits to observed energy levels. Included in the calculation 
   were the first five or six stages of ionization for sequences up through 
   nickel. Published gf values have been included for elements heavier than 
   nickel. The tabulation is restricted to lines with wavelengths less than 
   10 um.

File Summary:
--------------------------------------------------------------------------------
 FileName     Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe           80        .   This file
data.dat         79   265586   Semiempirical gf Data
--------------------------------------------------------------------------------

See also:
   VI/33 : Semiempirical Calculation of gf Values for Fe II

Byte-by-byte Description of file: data.dat
--------------------------------------------------------------------------------
   Bytes  Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  9   F9.4   nm      wl       Wavelength
  11- 16   F6.3   ---     log(gf)  Log of Oscillator Strength
  19- 21   F3.1   ---     J1       J Quantum Number of Lower Level
  23- 33   F11.3  cm-1    E1       Energy of lower level
  36- 38   F3.1   ---     J2       J quantum number of upper level
  40- 50   F11.3  cm-1    E2       Energy of upper level
  55- 59   F5.2   ---     el      *Element number and charge
  60- 69   A10    ---     C1       Lower configuration
  70- 79   A10    ---     C2       Upper configuration
--------------------------------------------------------------------------------
Note on el:
   integer part   = element number
   decimal part   = charge

References:
   Kurucz R.L. and Peytremann E. 1975, SAO Spec. Report No. 362. 
    =1975SAOSR.362.....K
   Kurucz R.L. and Peytremann E. 1974, SAO Spec. Report No. 359.
    =1974SAOSR.359.....K    
   Kurucz R.L. and Peytremann E. 1973, SAO Spec. Report No. 351.
    =1973SAOSR.351.....K
   Kurucz R.L., Peytremann E. and Avrett E.H. 1974, Blanketed Model Atmospheres
     for Early-Type Stars. Smithsonian Institution Press, Washington.
================================================================================
(End)                                  Julie Anne Watko [SSDOO/ADC]  15-Aug-1996

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