Line: Fe I - λ5242.5

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: -0.93 ± 0.04      log(gf)cog: -0.96 ± 0.06


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 5242.491 -0.967 LS 3p6.3d6.4s2 a1I LS 3p6.3d7.(2G).4p z1H* 3.634 5.999 6.0 5.0
NIST 5242.491 -0.967 3d6.4s2a 1I 3d7.(2G).4pz 1H* 3.634 5.999 6.0 5.0
VALD 5242.490 -0.967 LS 3d6.4s2 a1I LS 3d7.(2G).4p z1H* 3.634 5.999 6.0 5.0
SpectroWeb 5242.491 -0.956 - - 3.634 5.999 - -
SpectrW3 5242.500 -0.839 - - 3.634 5.999 6.0 5.0
TIPbase 5410.230 -1.119 0s a1I 4p z1H* 3.913 6.213 6.0 5.0

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 5242.490 ± 0.002 - -0.93 ± 0.04 - -
BRASSv2 COG - - -0.96 ± 0.06 0.03 Yes
BRASSv1 5242.491 -0.001 -0.97 0.04 Yes
NIST 5242.491 -0.001 -0.97 0.04 Yes
VALD 5242.490 0.000 -0.97 0.04 Yes
SpectroWeb 5242.491 -0.001 -0.96 0.03 Yes
SpectrW3 5242.500 -0.010 -0.84 -0.09 No
TIPbase 5410.230 -167.740 -1.12 0.19 No

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 104.48 102.83 89.79 87.26 94.94 81.33 83.93
ΔWλcorr +8.79 +7.61 +2.95 +3.56 +3.82 +0.76 +1.64
Databases
BRASSv2 GRID 126.78 117.96 91.31 91.16 101.72 81.05 86.78
BRASSv2 COG 123.14 114.88 89.47 89.15 99.53 79.41 84.94
BRASSv1 122.64 114.46 89.22 88.88 99.23 79.18 84.69
NIST 122.64 114.46 89.22 88.88 99.23 79.18 84.69
VALD 122.64 114.46 89.22 88.88 99.23 79.18 84.69
SpectroWeb 123.73 115.38 89.77 89.48 99.89 79.68 85.25
SpectrW3 136.10 125.82 95.88 96.14 107.23 85.03 91.29
TIPbase 108.77 102.66 81.84 80.86 90.58 72.33 77.27