VALD data sets

When extracting line parameters with VALD-EMS, data records (in the answer from VALD to the client) will include labels for each line, which indicate the source of the data. Usually the label serves as a reference to the original list, from which the gf-value of the line has been taken from (for details see below). Currently VALD includes only atomic lines from the following lists:

• Kurucz CD-ROM 18, December 4, 1993 edition is the source of data for lines with the labels:

   'Bell light: Li to O' 'Bell light: F to Al' 'Bell
  light: Si to K' 'Bell heavy: Cu to Zn' 'Bell heavy: Ga to Ba' 'Bell heavy: La
  to Lu' 'Bell heavy: Hf to U' 'NLTE lines: He' 'NLTE lines: B' 'NLTE lines: C'
  'NLTE lines: O' 'NLTE lines: Na' 'NLTE lines: Mg' 'NLTE lines: Al' 'NLTE
  lines: Si' 'NLTE lines: K' 'NLTE lines: Ca' 
  

• Kurucz CD-ROMs 20-22, July 3, 1994 edition are the sources of data for lines with the labels (observed energy levels only):

   'GFIRON ext.
  (Ca-Ni) 900-1000' 'GFIRON ext. (Ca-Ni) 1000-1500' 'GFIRON ext. (Ca-Ni)
  1500-2000' 'GFIRON ext. (Ca-Ni) 2000-2500' 'GFIRON ext. (Ca-Ni) 2500-3000'
  'GFIRON ext. (Ca-Ni) 3000-4000' 'GFIRON ext. (Ca-Ni) 4000-5000' 'GFIRON ext.
  (Ca-Ni) 5000-6000' 'GFIRON ext. (Ca-Ni) 6000-8000' 'GFIRON ext. (Ca-Ni)
  8000-12000' 'GFIRON ext. (Ca-Ni) 12000-16000' 'GFIRON ext. (Ca-Ni) >20000'
  

• The following are the labels for data from R.L.Kurucz, E.Peytremann, 1975, SAO Special Reports, Vol. 362:

   'Kurucz-Peytreman: Li to O'
  'Kurucz-Peytreman: F to Al' 'Kurucz-Peytreman: Si to K' 'Kurucz-Peytreman: Cu
  to Zn' 'Kurucz-Peytreman: Ga to Ba' 'Kurucz-Peytreman: La to Lu'
  'Kurucz-Peytreman: Hf to U' 
  

  The Kurucz-Peytreman 1975 data is only used as a supplement list during the creation of a more extensive extraction from GFIRON data. Usually, data will be taken from this source only for the far UV.

• Martin,G.A., Fuhr,J.R., and Wiese,W.L. 1988, J. Phys. Chem. Ref. Data, 17, Suppl. 3 corresponds to the labels:

   'NBS: Scandium' 'NBS: Titanium'
  'NBS: Vanadium' 'NBS: Chromium' 'NBS: Manganese' 'NBS: Iron' 'NBS: Cobalt'
  'NBS: Nickel' 
  

  These lists will be changed for the case of Fe 1 in a significant way: The wavelengths will be recalibrated and lower quality gf-values will be replaced. Then 'NBS: Iron' will be reorganized (and probably named differently).

• Bizzarri, A., Huber, M.C.E., Noels, A., Grevesse, N., Bergeson, S.D., Tsekeris, P., Lawler, J.E., 1993, A&A 273, 707 as well as
• Ryabchikova, T.A., Hill, G.M., Landstreet, J.D., Piskunov, N., Sigut, T.A.A., 1994a, MNRAS 267, 697 were used to compile the file with the label:

   'Ti 2 accurate gf-values' 
  

• Pinnington, E.H., Ji, Q., Guo, B., Berends, R.W., van Hunen, J., 1993, Can. J. Phys. 71, 470 as well as
• Sigut, T.A.A., Landstreet, J.D., 1990, MNRAS 247, 611 were used to compile the file with the label:

   'Cr 2 accurate gf-values' 
  

VALD is constantly adding more lines, so look for the most recent version of this document for the actual references and the corresponding labels. Please take into account that for all modes of data extraction except for SHOW LINE (see comments on VALD request types), data is merged from different lists and the label refers to the source of the gf-value only. If you need the source for atomic data, other than gf, you have to use the SHOW LINE request, which enables you to see how the data from various sources are merged for a particular line.

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