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J/A+AS/118/495      Spectroscopy of MWC 349 A (Andrillat+ 1996)
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B[e] stars. II. MWC 349 A
     Andrillat Y., Jaschek M., Jaschek C.
    <Astron. Astrophys. Suppl. Ser. 118, 495 (1996)>
    =1996A&AS..118..495A      (SIMBAD/NED BibCode)
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ADC_Keywords: Equivalent widths ; Spectra, infrared
Keywords: stars: emission line, B[e] - stars: variables: others -
          stars: MWC 349 A

Description:
    We analyse spectroscopic CCD material obtained at the Haute Provence
    Observatory. We provide line identifications and equivalent width
    measurements in the wavelength region 3700-8790A. Over 300 emission
    features are identified and a comparison of our results with those of
    other authors is provided, as well as a table of all elements which
    have been identified in the spectrum of the object. The pattern of
    elements present is analogous to that of B-type stars, but some
    exceptions are noted, such as the absence of C, Al and Mn. We review
    the present knowledge of the spectrum variability of MWC 349A. The
    observations indicate th at the equivalent widths of the lines of many
    elements vary by factors of up to two. We also provide a list of
    diffuse interstellar features observed. The latter lead to an average
    (B-V) excess of about two magnitudes, which is less than what is
    expected for an object having an interstellar extinction of 10-11
    magnitudes.

Objects:
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       RA   (2000)   DE     Designation(s)
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    20 32 45.4  +40 39 37   MWC 349A
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File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2             70      315   Emission lines measured in MWC 349
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See also:
      J/A+AS/117/281 : B[e] stars. I. HD 51585 (= OY Gem)
      J/A+AS/120/99  : B[e] stars. III. MWC 645
      J/A+AS/124/441 : B[e] stars. IV. MWC 142
      J/A+AS/128/475 : B[e] stars. V. MWC 158
      J/A+AS/131/479 : B[e] stars. VI. MWC 297

Byte-by-byte Description of file: table2
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   Bytes Format Units   Label     Explanations
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       1  A1    ---     Spect     Spectrum (see table1)
   3- 10  F8.3  0.1nm   Lambda    Wavelength
      11  A1    ---   n_Lambda    [&] An & indicates probably affected by
                                       atmospheric absorption
  13- 18  F6.2  0.1nm   EW        ? Equivalent width of the emission line
  19- 23  A5    ---   n_EW        Note on EW (1)
  25- 74  A50   ---     Ident     Line identification of the order element
                                   ionization stage and multiplet number (2)
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Note (1): p refers to the preceding line
          f refers to the following line
          - indicates the absence of the line on this particular plate
Note (2): J stands for Johansson (1978)
          "Meinel" stands for Meinel et al. (1969)
          The identification of Fe II 8423 and 8672 was taken from
           Johansson (1977) and HeI 8585 and 8776 from Jaschek et al. (1994)
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Table1: Observational data
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  Code   Range   Date    Spectrum
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  a  3740-4195  22-06-94  underexposed
  b  4130-4594  24-07-93  noisy
  c  4554-5007  25-07-93  noisy
  d  4883-5335  22-06-94
  e  5533-5984  21-06-94
  f  6017-6467  22-06-94
  g  6332-6780  20-06-95
  h  7008-7450  18-06-94
  i  7590-8014  18-08-91
  j  7983-8420  23-07-93
  k  8370-8780  17-08-91
----------------------------------

References:
    Jaschek C. et al., 1994, A&A 282, 911     =1994A&A...282..911J
    Johansson S., 1977, MNRAS 178, p17           =1977MNRAS.178p..17J
    Johansson S., 1978, Phys. Scripta 18, 217
    Meinel A.B. et al., 1969, Catalog of emission lines in astrophysical
     objects, Tucson
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(End)                                         Patricia Bauer [CDS]   25-Mar-1996