Line: Ni I - λ6767.8

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: -2.18 ± 0.05      log(gf)cog: -2.19 ± 0.07


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 6767.772 -2.140 LS 3d10 a1S LS 3d9.(2D).4p z3P* 1.826 3.658 0.0 1.0
NIST 6767.770 -2.170 3d101S 3d9.(2D).4p3P* 1.826 3.658 0.0 1.0
VALD 6767.772 -2.140 LS 3d10 a1S LS 3d9.(2D).4p z3P* 1.826 3.658 0.0 1.0
SpectroWeb 6767.768 -2.170 - - 1.826 3.658 - -
SpectrW3 6767.800 -2.168 - - 1.826 3.658 0.0 1.0

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 6767.772 ± 0.000 - -2.18 ± 0.05 - -
BRASSv2 COG - - -2.19 ± 0.07 0.01 Yes
BRASSv1 6767.772 0.000 -2.14 -0.04 Yes
NIST 6767.770 0.002 -2.17 -0.01 Yes
VALD 6767.772 0.000 -2.14 -0.04 Yes
SpectroWeb 6767.768 0.004 -2.17 -0.01 Yes
SpectrW3 6767.800 -0.028 -2.17 -0.01 Yes

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 94.58 96.72 87.40 79.10 89.41 72.08 72.92
ΔWλcorr +6.84 +5.97 +2.26 +2.46 +2.85 +0.14 +0.80
Databases
BRASSv2 GRID 113.83 106.77 86.81 82.54 91.93 70.55 75.08
BRASSv2 COG 113.36 106.37 86.53 82.25 91.62 70.29 74.80
BRASSv1 117.76 110.13 89.10 84.97 94.48 72.71 77.32
NIST 114.87 107.65 87.42 83.19 92.60 71.13 75.68
VALD 117.76 110.13 89.10 84.97 94.48 72.71 77.32
SpectroWeb 114.87 107.65 87.42 83.19 92.60 71.13 75.68
SpectrW3 114.87 107.65 87.42 83.19 92.60 71.13 75.68