Line: Ca I - λ6166.4

Quality assessable? Yes  |  Robust against analysis method? Yes

Line considered quality assessable if log(gf)grid and log(gf)cog within error of each other. Line considered robust against analysis method if log(gf)grid and log(gf)cog within 0.04dex of each other.

log(gf)grid: -1.09 ± 0.04      log(gf)cog: -1.11 ± 0.05


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 6166.439 -1.142 LS 3p6.3d.4s 3D LS 3p6.4s.5p 3P* 2.521 4.531 1.0 0.0
NIST 6166.440 -0.900 3p6.3d.4s3D 3p6.4s.5p3P* 2.521 4.531 1.0 0.0
VALD 6166.439 -1.142 LS 3p6.3d.4s 3D LS 3p6.4s.5p 3P* 2.521 4.531 1.0 0.0
SpectroWeb 6166.439 -1.156 - - 2.521 4.531 - -
SpectrW3 6166.400 -0.902 - - 2.521 4.531 1.0 0.0

Line profile plots per G-type benchmark star

Information Radio buttons can be used to choose which database log(gf) values and line profiles to view. Interactive plot controls can be found to the top right of plotting panels.

Top left panel: Points represent the individual stellar log(gf) values plotted as a function of effective temperature. Lines represent the mean log(gf) values and the literature log(gf) values.
Shaded areas represent the uncertainty associated with a given log(gf) value.

Remaining panels: Observed line profiles are shown by black dotted lines for each of the 7 FGK-type benchmark stars. Synthetic line profiles, calculated using the mean log(gf) values and the
literature log(gf) values, are shown by the solid coloured lines. Shaded areas represent the uncertainty in line profile flux due to the uncertainty in the corresponding log(gf) values.


Quality assessment

Database λ (Å) Δλ(w.r.t GRID) (Å) log(gf) Δlog(gf)(w.r.t GRID) Within error of log(gf)grid?
BRASSv2 GRID 6166.430 ± 0.002 - -1.09 ± 0.04 - -
BRASSv2 COG - - -1.11 ± 0.05 0.02 Yes
BRASSv1 6166.439 -0.009 -1.14 0.05 No
NIST 6166.440 -0.010 -0.90 -0.19 No
VALD 6166.439 -0.009 -1.14 0.05 No
SpectroWeb 6166.439 -0.009 -1.16 0.07 No
SpectrW3 6166.400 0.030 -0.90 -0.19 No

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 104.51 95.18 75.81 69.89 79.61 60.25 66.26
ΔWλcorr +10.04 +7.68 +2.76 +3.53 +3.50 +0.67 +1.53
Databases
BRASSv2 GRID 125.41 109.30 74.91 74.44 87.56 59.97 69.50
BRASSv2 COG 122.33 106.78 73.23 72.62 85.64 58.40 67.78
BRASSv1 119.30 104.31 71.55 70.81 83.74 56.80 66.08
NIST 149.26 128.52 87.01 87.68 101.80 71.17 81.83
VALD 119.30 104.31 71.55 70.81 83.74 56.80 66.08
SpectroWeb 117.74 103.04 70.68 69.87 82.74 55.98 65.19
SpectrW3 149.26 128.52 87.01 87.68 101.80 71.17 81.83