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