The UVES spectrum of HD 35548 (HR 1800)



plot of the spectrum


the binary

PRELIMINARY WORK:


Spectroscopic Binary
 
ADOPTED PARAMETERS:
Primary: HgMn star
Teff=11000K, logg=3.80; vturb=0.0 km/s, vsini=1.0 km/s, AT12
Adgiustment of parameters  from  Stromgren photometry (11100,3.8) in order to
fit Hbeta and get Fe I.Fe II ionization equilibrium.  

Secondary:
Teff=8750 K (from DV) logg=4.0 (assumed), vsini=200 km/sec (from Mg II, 4481) 

L(A)=63%  L(B)=37% from the ratio of model fluxes.


---------------------------------------------
(Dolk et al. 2002, A&A 385,111 used:
Primary:   
Teff=11088K, logg=3.79 from Stromgren photometry as a single star,
vturb=0.0 km/s, vsini=2.0 km/s
Secondary:
Teff=8500 K, logg=4.0, vsini=50 km/sec
L(A)/L(B)=4.  )
---------------------------------------------

Primary:
No solar abundances:  He  -1.70  [-0.65]
                      C   -4.12  [-0.60]
                      N  <-5.62 <[-1.50]
                      O   -3.70  [-0.49]
                      Mg  -5.06  [-0.60]
                      Al  -7.17  [-1.60]
                      Si  -5.30  [-0.81]
                      P   -6.00  [+0.59]
                      S   -5.21  [-0.50]
                      Ca  -5.83  [-0.15]
                      V   -9.44  [-1.40]:
                      Cr  -5.80  [+0.57]   
                      Mn  -5.00  [+1.65]
                      Ni  -6.79  [-1.00]
                      Sr  -7.07  [+2.00]
                      Y   -5.95  [+3.85]
                      Zr  -8.20  [+1.24]
                      Xe  -6.00  [+3.87]
                      Pr  -9.50  [+1.80]
                      Nd  -9.14  [+1.40]
                      Yb  -8.11  [-2.85]
                      Pt  -6.70  [+3.54] isotopic anomaly
                      Au  -7.23  [+3.80]
                      Hg  -5.70  [+5.25] isotopic anomaly
              

Ca II infrared triplet: Dlam=+0.17, 0.18, 0.18

Pt  194 0%         terrest.  32.9%
    195 0%                   33.8%
    196 0%                   25.2%
    198 100%                  7.19%

Hg  196 0%         terrest. 0.1534%    
    198 0.16%               9.968 %
    199 0.76%              16.873%
    200 2.97%              23.096%
    201 4.83%              13.181%
    202 50.58%             29.863%
    204 40.74%              6.865%

Secondary: solar abundances