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J/PAZh/26/465   IRAS 20004+2955 (V1027 Cyg) chemical comp.   (Klochkova+, 2000)
Optical spectrum of the infrared source IRAS 20004+2955 (V1027 Cyg).
     Klochkova V.G., Mishenina T.V., Panchuk V.E.
    <Pis'ma Astron. Zh. 26, 465 (2000)>
    =2000PAZh...26..465K
    =2000AstL...26..398K
ADC_Keywords: Stars, variable; Equivalent widths; Abundances


Abstract:
    Based on high-dispersion echelle spectra taken with the 6-m telescope,
    detailed chemical composition of the IR source IRAS 20004+2955
    identified with the variable star V1027 Cyg is studied.
Object:
    -------------------------------------------------------------------------
         RA    (2000)    DE        Designation
    -------------------------------------------------------------------------
     20 02 27.38     +30 04 25.5   V1027 Cyg = IRAS 20004+2955 = HD 333385
    -------------------------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        47      115   Atomic data, equivalent widths of special
                             lines and elemental abundances for two
                             atmosphere models
table3.dat        37       19   Atmospheric elemental abundances for V1027 Cyg


See also:
    J/PAZh/26/510 : Spectrum of bipolar nebula AFGL 2688 (Klochkova+, 2000)
    J/PAZh/26/115 : Spectrum of IRAS 23304+6147 (Klochkova+, 2000)


Byte-by-byte Description of file: table2.dat

   Bytes Format  Units   Label    Explanations

   1-  4  A4     ---     El       Element
   7- 14  F8.3   0.1nm   Lambda   Wavelength
  17- 20  F4.2   eV      ExcPot   Excitation potentials of the lower level
  23- 27  F5.2   ---     Loggf    Oscillator strength (log gf)
  30- 35  F6.2   0.1um   EW       Equivalent width
  38- 41  F4.2   ---     A(X)1    Chemical composition for the model:
                                  Teff=5000K, logg=1.0
  44- 47  F4.2   ---     A(X)2    Chemical composition for the model:
                                  Teff=4900K, logg=0.5;


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  4  A4    ---     El        Element
   6-  7  I2    ---     n         Number of the lines used
  10- 13  F4.2  ---     logA1     Mean atmospheric elemental abundances for
                                   Teff=5000K, logg=1.0
  16- 19  F4.2  ---     e_logA1   ? rms uncertainty on logA1
  22- 25  F4.2  ---     logA2     Mean atmospheric elemental abundance for
                                   Teff=4900K, logg=0.5
  28- 31  F4.2  ---     e_logA2   ? rms uncertainty on logA2
  34- 37  F4.2  ---     logASun   Solar atmospheric elemental abundance

(End)              Veta Avedisova [INASAN]                           29-Jun-2001