Line: Si I - λ5690.4

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: -1.78 ± 0.04      log(gf)cog: -1.74 ± 0.04


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 5690.425 -1.773 LS 3s2.3p.4s 3P* LS 3s2.3p.5p 3P 4.930 7.108 1.0 1.0
NIST 5690.425 -1.870 3s2.3p.4s3P* 3s2.3p.5p3P 4.930 7.108 1.0 1.0
VALD 5690.425 -1.870 LS 3s2.3p.4s 3P* LS 3s2.3p.5p 3P 4.930 7.108 1.0 1.0
SpectroWeb 5690.425 -1.870 - - 4.929 7.108 - -
SpectrW3 5690.400 -1.758 - - 4.929 7.108 1.0 1.0
TOPbase 5655.391 -1.949 4s 3P* 5p 3P 4.966 7.166 1.0 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 5690.419 ± 0.002 - -1.78 ± 0.04 - -
BRASSv2 COG - - -1.74 ± 0.04 -0.04 Yes
BRASSv1 5690.425 -0.006 -1.77 -0.01 Yes
NIST 5690.425 -0.006 -1.87 0.09 No
VALD 5690.425 -0.006 -1.87 0.09 No
SpectroWeb 5690.425 -0.006 -1.87 0.09 No
SpectrW3 5690.400 0.019 -1.76 -0.02 Yes
TOPbase 5655.391 35.028 -1.95 0.17 No

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 44.85 53.64 52.50 51.14 60.83 46.55 48.73
ΔWλcorr +2.95 +2.87 +1.15 +1.78 +1.79 +0.22 +0.53
Databases
BRASSv2 GRID 47.78 55.24 48.78 49.15 61.25 43.35 50.68
BRASSv2 COG 49.93 57.39 50.65 51.08 63.32 45.15 52.61
BRASSv1 47.91 55.39 48.90 49.27 61.38 43.47 50.80
NIST 41.52 48.89 43.22 43.38 55.01 38.03 44.94
VALD 41.52 48.89 43.22 43.38 55.01 38.03 44.94
SpectroWeb 41.52 48.89 43.22 43.38 55.01 38.03 44.94
SpectrW3 48.81 56.28 49.69 50.09 62.25 44.22 51.62
TOPbase 36.71 43.89 38.78 38.81 49.98 33.84 40.35