The spectrum of HD 19400
plot of the HARPS 2013 spectrum
HgMn PGa star
ATLAS9 parameters: Teff=13870 K, logg=3.8, vturb=0.0 km/sec, vsini=32 km/sec
These parameters were determined from Stromgren color indices.
ATLAS12 parameters: Teff=13500 K, logg=3.9, vturb=0.0 km/sec, vsini=32 km/sec.
The ATLAS12 model was used to compute the synthetic spectrum.
All the lines and atomic data used for the abundance analysis are listed
in the Appendix
SILICON: the average abundance from equivalent widths, -4.36, is too high.
We adopted -4.45 from profiles to compute the spectrum;
MERCURY: We adopted the abundance derived from the profile at 3983.931 A.
ABUNDANCES adopted to compute the synthetic spectrum (solar values were
adopted for the other elements):
HD 19400 SUN Diff.
(Asplund et al.,
2009)
He I -2.16 (0.007) -1.11 -1.05
C II -4.12 -3.61 -0.51
O I -3.90 -3.35 -0.55
Ne I -3.77 -4.11 +0.34
Na I -5.71 -5.80 +0.09
Mg II -5.06 -4.44 -0.62
Al II -6.77 -5.59 -1.18
Si II-III -4.45 -4.53 +0.08
P II-III -4.35 -6.63 +2.28
S II -5.82 -4.92 -0.90
Ca II -5.50 -5.70 +0.20
Ti II -6.35 -7.09 +0.74
Cr II -6.24 -6.40 +0.16
Mn II -4.94 -6.61 +1.67
Fe II-III -3.80 -4.54 +0.74
Ni II -5.84 -5.82 -0.02
Ga II -5.19 -9.00 +3.81
Sr II -9.07 -9.17 +0.10
Xe II -4.65 -9.80 +5.15
Hg II -6.35 -10.87 +4.52