Selected spectral regions of HD 193452 (HR 7775)
plot of the ESO-CAT-CES spectra 3965-4000 and 4018-4053 Å (Oct.1996) (R=118000)
plot of the ESO-CAT-CES spectrum 6131-6157 Å (July 1998)(R=135000)
plot of the CFHT-GECKO spectrum 6105-6190 Å (August 1999)(R=125000)
HgMn star
Parameters from Stromgren indices (a,r*) for vturb=0.0 km/s.
Teff=10800 K, logg=4.10; vturb=0.0 km/s
They were used to compute an ATLAS9 model.
We adopted vsini=1.25 km/s from the comparison of observed and computed
spectra.
Star with ANOMALOUS ISOTOPIC COMPOSITION of Pt and Hg.
Isotopic composition of Pt:
194=0, 195=18%, 196=50%, 198=32%
Isotopic composition of Hg:
196=0, 198=0, 199=0, 200=0, 201=0.5%, 202=49.75%, 204=49.75%
STRONG unidentified line at 6130.05-6130.15
Abundances used to compute the synthetic spectrum with the SYNTHE code:
HD 193452 Sun
He I -1.76 -1.11 [-0.65]
C I -3.98 -3.52 [-0.46]
O I -3.71 -3.21 [-0.50]
Ne I -4.36 -3.96 [-0.40]
Mg I -4.96 -4.46 [-0.50]
Si II -4.89 -4.49 [-0.40]
P II -5.59 -6.59 [+1.00]
S I-II -4.83 -4.71 [-0.12]
Ca I-II -5.20 -5.68 [+0.40]
Ti I-II -6.30 -7.02 [+0.72]
V II -8.24 -8.04 [-0.20]
Cr I-II -5.72 -6.37 [+0.65]
Mn I-II -6.30 -6.65 [+0.35]
Fe I-II -4.00 -4.54 [+0.54]
Ga I -5.76 -9.16 [+3.40]
Y II -7.00 -9.80 [+2.23]
Zr II -9.14 -9.54 [+0.40]
Ba II -9.50 -9.91 [+0.40]
Pr II-III -8.20 -11.33 [+3.13]
Nd II-III -7.90 -10.54 [+2.64]
Gd II -9.12 -10.92 [+1.80]
Ho II -9.48 -11.78 [+2.30]
Pt II -5.65 -10.20 [+4.55] anomalous isotopic comp.
Au II -6.25 -11.03 [+4.78]
Hg II -5.80 -10.95 [+5.15] anomalous isotopic comp.
U II -9.51 -12.51 [+3.00]