Access to Astronomical Catalogues

J/ApJ/667/1267      CrI transition probabilities             (Sobeck+, 2007)
Improved laboratory transition probabilities for neutral chromium and
redetermination of the chromium abundance for the Sun and three stars.
    Sobeck J.S., Lawler J.E., Sneden C.
   <Astrophys. J., 667, 1267-1282 (2007)>
   =2007ApJ...667.1267S
ADC_Keywords: Atomic physics

Keywords: atomic data - stars: abundances - stars: Population II -
          Sun: abundances - Sun: general

Abstract:
    Branching fraction measurements from Fourier transform spectra in
    conjunction with published radiative lifetimes are used to determine
    transition probabilities for 263 lines of neutral chromium.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        78      263   Atomic transition probabilities for CrI organized
                            by increasing wavelength in λair


See also:
    J/MNRAS/390/733 : FTS reference UV wavelengths of CrIII (Smillie+, 2008)
    J/ApJ/700/720   : The 236.6-5400.0nm spectrum of CrI (Wallace+, 2009)
    J/A+A/524/A35   : Effective collision strengths of CrII (Wasson+, 2010)
    J/A+A/511/A68   : Transitions of CrII (Gurell+, 2010)
    J/ApJS/196/24   : Electron-impact excitation of CrII (Wasson+, 2011)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units    Label    Explanations

   1-  7  F7.2  0.1nm    lambda   Wavelength in air in Angstroms
   9- 16  F8.2  cm-1     EU       Upper level energy
  18- 25  A8    ---      TermU    Upper level term
      27  I1    ---      JU       [0/6] Upper level J value
  29- 36  F8.2  cm-1     EL       Lower level energy
  38- 45  A8    ---      TermL    Lower level term
      47  I1    ---      JL       [0/6] Lower level J value
      49  A1    ---      N        [N] Normalization line for LS calculation
  51- 57  F7.3  10+6/s   Acalc    ? Transition probability from LS calculation
  59- 65  F7.3  10+6/s   Aexp     Transition probability from Experiment
  67- 72  F6.3  10+6/s   e_Aexp   Total uncertainty in TranP-Ex
  74- 78  F5.2  [-]      log(gf)  Log of degeneracy * oscillator strength


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    27-Apr-2012