Line: Ca I - λ5260.4

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: -1.70 ± 0.05      log(gf)cog: -1.68 ± 0.03


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 5260.387 -1.719 LS 3p6.3d.4s 3D LS 3p6.3d.4p 3P* 2.521 4.878 1.0 2.0
NIST 5260.387 -1.900 3p6.3d.4s3D 3p6.3d.4p3P* 2.521 4.878 1.0 2.0
VALD 5260.387 -1.719 LS 3p6.3d.4s 3D LS 3p6.3d.4p 3P* 2.521 4.878 1.0 2.0
SpectroWeb 5260.387 -1.720 - - 2.521 4.877 - -
TOPbase 5478.006 -2.020 3d 3D 4p 3P* 2.875 5.147 1.0 2.0

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 5260.381 ± 0.002 - -1.70 ± 0.05 - -
BRASSv2 COG - - -1.68 ± 0.03 -0.02 Yes
BRASSv1 5260.387 -0.006 -1.72 0.02 Yes
NIST 5260.387 -0.006 -1.90 0.20 No
VALD 5260.387 -0.006 -1.72 0.02 Yes
SpectroWeb 5260.387 -0.006 -1.72 0.02 Yes
TOPbase 5478.006 -217.625 -2.02 0.32 No

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 56.61 51.53 38.18 32.86 41.19 25.85 30.42
ΔWλcorr +1.49 +0.94 +0.10 +0.30 +0.17 +0.00 +0.00
Databases
BRASSv2 GRID 55.47 51.78 34.95 32.54 42.19 24.84 30.42
BRASSv2 COG 56.66 52.88 35.92 33.49 43.23 25.67 31.33
BRASSv1 54.58 50.94 34.24 31.83 41.40 24.22 29.74
NIST 44.05 41.15 26.08 23.96 32.35 17.64 22.20
VALD 54.58 50.94 34.24 31.83 41.40 24.22 29.74
SpectroWeb 54.51 50.89 34.19 31.78 41.35 24.18 29.69
TOPbase 37.43 34.96 21.35 19.48 26.88 14.07 17.96