Line: Ni I - λ4995.7

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: -1.51 ± 0.03      log(gf)cog: -1.49 ± 0.02


Cross-matched literature data

Database λ (Å) log(gf) label low label up Elow (eV) Eup (eV) Jlow Jup
BRASSv1 4995.650 -1.124 LS 3d9.(2D).4p z3F* JK 3d9.(2D<5/2>).4d 2[7/2] 3.635 6.117 3.0 4.0
NIST 4995.650 -1.580 3d9.(2D).4p3F* 3d9.(2D<5/2>).4d2[7/2] 3.635 6.116 3.0 4.0
VALD 4995.650 -1.580 LS 3d9.(2D).4p z3F* JK 3d9.(2D<5/2>).4d 2[7/2] 3.635 6.117 3.0 4.0
SpectroWeb 4995.643 -1.580 - - 3.635 6.116 - -

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 4995.650 ± 0.002 - -1.51 ± 0.03 - -
BRASSv2 COG - - -1.49 ± 0.02 -0.02 Yes
BRASSv1 4995.650 0.000 -1.12 -0.39 No
NIST 4995.650 0.000 -1.58 0.07 No
VALD 4995.650 0.000 -1.58 0.07 No
SpectroWeb 4995.643 0.007 -1.58 0.07 No

Equivalent widths

WλEpsEri (mÅ) Wλ70 Oph (mÅ) Wλ70 Vir (mÅ) WλSun (mÅ) Wλ51 Peg (mÅ) Wλ10 Tau (mÅ) WλBetCom (mÅ)
Measured 24.96 29.04 23.45 20.45 28.96 16.96 18.53
ΔWλcorr +1.01 +0.74 +0.13 +0.34 +0.23 +0.14 +0.00
Databases
BRASSv2 GRID 25.58 29.10 23.00 20.99 28.73 17.05 20.98
BRASSv2 COG 26.83 30.38 24.04 21.99 29.93 17.88 21.94
BRASSv1 46.08 49.10 39.84 37.52 47.41 31.53 37.04
NIST 22.77 26.18 20.61 18.73 25.97 15.19 18.82
VALD 22.77 26.18 20.61 18.73 25.97 15.19 18.82
SpectroWeb 22.77 26.18 20.61 18.73 25.97 15.19 18.82