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J/A+AS/107/353               CP stars                      (Lopez-Garcia+, 1994)
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Elemental abundance studies of CP stars: The silicon star HD 43819 and
the CP Star HD 147550
       Lopez-Garcia Z., Adelman S.J.
      <Astron. Astrophys. Suppl. Ser. 107, 353 (1994)>
      =1994A&AS..107..353L      (SIMBAD/NED Reference)
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ADC_Keywords: Stars, peculiar; Equivalent widths; Abundances
Keywords: stars: abundances - stars: chemically peculiar -
          stars: individual: HD 43819 - stars: individual HD 147550

Abstract:
    Fine analyses  of the silicon star HD 43819  and the CP star HD 147550
    are presented using ATLAS9 model atmospheres whose predictions fit the
    optical  region spectrophotometry and  H{gamma}  profiles and have the
    same  bulk metallicity as the deduced abundances.  For HD 43819 except
    for  scandium and  nickel,  the  derived abundances  of the  iron peak
    elements  are around 10 times solar while those of the rare earths are
    about  1000  times   solar.   The   lighter  elements   are  generally
    underabundant  except for silicon and  calcium which are overabundant.
    HD  147550 is helium and calcium poor;  carbon,  magnesium,  aluminum,
    scandium, titanium, and iron normal; and sulfur, chromium,  manganese,
    nickel, strontium, zirconium, barium, europium,  and mercury rich.  It
    is  a nonmagnetic CP star intermediate between the HgMn and the hot Am
    stars.

Objects:
    ----------------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ----------------------------------------------------------
    06 19 01.8 +17 19 31   HD 43819  = HR 2258 = V1155 Ori 
    16 22 38.9 -02 04 48   HD 147550 = HR 6096 
    ----------------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
 FileName   Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
table4a.dat     73        281    Elemental abundances
table4b.dat     41         25    Relative abundances
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See also:
 J/A+AS/137/227 : HD 133029, HD 192913 elemental abundances (Lopez-Garcia+ 1999)

Byte-by-byte Description of file: table4a.dat
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   Bytes Format  Units   Label      Explanations
--------------------------------------------------------------------------------
   1-  6  A6     ---     Element    Element
  10- 12  I3     ---     No         []? Multiplet Number
  16- 22  F7.2   0.1nm   Lambda     Wavelength
  26- 30  F5.2   ---     log(gf)    Oscillator strength
  34- 35  A2     ---   r_log(gf)    Reference to oscillator strength (1)
  39- 41  I3     0.1pm   W1         []? Equivalent width for HD 43819
  46- 50  F5.2   ---   log(N/Ntot)1 []? Deduced abundance for HD43189 (2)
  56- 58  I3     0.1pm   W2         []? Equivalent width for HD 147550
  63- 67  F5.2   ---   log(N/Ntot)2 []? Deduced abundance for HD 147550 (2)
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Note (1): Sources of gf-values:
          BK = Biemont et al. (1982A&A...107..166B)
          DW = Dworetsky (1972PASP...84..652D)
          GB = Grevesse et al. (1981, Upper Main Sequence CP Stars, 23rd.
                Liege Astrophys. Coll., 211)
          KX = Kurucz (1993, ASP Conf. Ser. 44, 87)
          LA = Lanz & Artru (1985PhyS...32..115L)
          MC = Magazzu & Cowley (1986ApJ...308..254M)
          MF = Martin, Fuhr & Wiese (1988, Cat. <VI/72>) for Sc through Mn;
               Fuhr, Martin & Wiese (1988, Cat. <VI/72>) for Fe through Ni;
          SC = Schaeffer (1971ApJ...163..411S)
          WD = Ward (1985MNRAS.213...71W)
          WF = Wiese & Fuhr (1975JPCRD...4..263W)
          WM = Wiese & Martin (1980, NSRDS-NBS 68, Part.2, US Governement
                Printing Office, Washington)
          WS= Wiese, Smith & Glennon (1966, NSRDS-NBS 4, US Governement Printing
                Office, Washington) and Wiese, Smith & Miles (1969, NSRDS-NBS,
                D.C.: US Department of Commerce, National Bureau of Standards)
Note (2): N = number of atoms/volume of particular element
          Ntotal = number of atoms/volume of all elements
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Byte-by-byte Description of file: table4b.dat
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   Bytes Format  Units   Label        Explanations
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   1-  6  A6     ---     Element      Element
  12- 16  F5.2   ---   log(El/Ntot)1  []? Elemental abundance for HD 43819 (1)
      17  A1     --- u_log(El/Ntot)1  Uncertainty flag on log(El/Ntot)1
  21- 24  F4.2   --- e_log(El/Ntot)1  []? rms uncertainty on log(El/Ntot)1
  30- 34  F5.2   ---   log(El/Ntot)2  []? Elemental abundance for HD 147550 (1)
  38- 41  F4.2   --- e_log(El/Ntot)2  []? rms uncertainty on log(El/Ntot)2
--------------------------------------------------------------------------------
Note (1): El = Element
          Ntot = number of atoms/volume of all elements
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(End)                                           Patricia Bauer [CDS] 19-May-1994