Atmospheric parameters:
FROM the Stromgren photometery and ATLAS9 color grids:
Component A: Teff=12652K, log g=3.98
The effect of the B component was not considered
FROM observed and computed composite BALMER PROFILES:
ATLAS9 parameters for a radii ratio (R(B)/R(A))^2=0.4
Component A : Teff=12650K, logg=3.8
Component B : Teff=9750K, logg=3.9
The radii ratio was derived from the relation:
[R(B)/R(A)]^2=M(B)/M(A)*(g(A)/g(B))
where M(A)/M(B)=1.7 (Gonzalez et al. 2014) and logg(A)-logg(B) was assumed equal to -0.1
From the comparison of observed and computed spectra:
For the A component: vsini=17 km/sec
For the B component: vsini=6 km/sec
Final parameters:
For the A component, ATLAS12 parameters: Teff=12400K, logg=3.8.
They give a T-tauross stratification similar to that from the
[12650, 3.8] ATLAS9 model. The ATLAS12 abundances are those
derived from the [12650,3.8] ATLAS9 model.
For the B component, ATLAS9 parameters: Teff=9750K, logg=3.9
The parameters reproduce the composite hydrogen profiles Hbeta, Hgamma,
Hdelta and meet the requirement of FeI-FeII ionization equilibrium.
Only profiles were used, no equivalent widths were measured.
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ABUNDANCES: The synthetic spectrum was computed with the abundances
of He I, C II, O I, Na I, Mg II, Al I, Si II, P II... for the A component
and with the abundances of ... for the B component.
A star B star sun
He I -2.45 -1.11
C II -3.8 -4.6 -3.52
O I -3.34 -4.5 -3.21
Na I -5.67
Mg II -5.06 -4.90 -4.46
Al I -6.60 -7.00 -5.57
Si II -4.18 -6.00 -4.49
Si III -4.13 -6.00 -4.49
P II -4.91 -6.59
S II -5.6: -4.71
Ca II -5.53 -5.70 -5.68
Sc II <-9.90 <-10.90 -8.87
Ti II -6.10 -6.75 -7.02
Cr II -6.26 -5.60 -6.37
Mn II -5.10 -5.70 -6.65
Fe I -3.60 -4.20 -4.54
Co -7.12 -7.12
Ni -6.80 -5.79 -5.79
Zn -7.44 -7.44
Ga -5.85 -9.16 -9.16
Sr -7.90 -8.10 -9.07
Y -7.70 -8.24 -9.80
Zr -8.44 -9.50 -9.44
Xe -5.44 -9.87 -9.87
Ba -9.91 -9.40 -9.91
La -8.80 -10.87
Ce -7.98 -10.46
Pr -7.82 -11.33
Nd -6.91 -10.54
Sm -7.92 -11.03
Eu -8.82 -11.53
Gd -8.60 -10.92
Tb -8.46 -11.69
Dy -7.47 -10.90
Ho -8.43 -11.78
Er -7.79 -11.11
Hg -6.70 -10.91