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/catalogs/3/3195/

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III/195    Atlas of Optical Spectral Classification OB Stars (Walborn+ 1990)
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Contempory Optical Spectral Classification of the OB Stars: A Digital Atlas
   Walborn N.R., Fitzpatrick E.L.
  <Pub. Astr. Soc. Pac. 102, 379 (1990)>
  =1990PASP..102..379W
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ADC_Keywords: Stars, early-type; MK spectral classification; Stars, OB

Description:
  The Atlas provides digital spectra to assist the classification
  of OB spectra for 78 standard objects in the wavelength range
  395.0-475.0 nm. Spectral types range from O3 - B3 (-B8 at Ia).
  The Atlas provides contemporary digital data comparable to the
  earlier printed Atlasses by Morgan et al. (1943), Abt et al.
  (1968), Yamashita et al. (1977) and Morgan et al. (1978).

  The digital data were obtained with the Shectman/Heathcote two-
  dimensional, photon-counting detector on the Casegrain spectrograph
  at the CTIO 1-meter telescope during October 1988 and March 1989.
  The 3-pixel resolution is 1.5 Angstroem, and the full wavelength
  coverage is 3800-5000 A. The data were extracted and rectified by
  using a uniform template followed by a low-order spine fit.

File Summary:
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  FileName   Lrecl  Records   Explanations
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ReadMe          80        .    This file
objects.dat     66       78    List of OB stars included in the Atlas
fits/*           .       78    Directory with the 78 FITS Spectra
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Byte-by-byte Description of file: objects.dat
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   Bytes Format Units   Label     Explanations
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   1- 12  A12   ---     FileName  Name of FITS file in subdirectory fits
  14- 15  I2    h       RAh       Right Ascension J2000 (hours) (1)
  17- 18  I2    min     RAm       Right Ascension J2000 (minutes) (1)
  20- 23  F4.1  s       RAs       Right Ascension J2000 (seconds) (1)
      25  A1    ---     DE-       Declination J2000 (sign)
  26- 27  I2    deg     DEd       Declination J2000 (degrees) (1)
  29- 30  I2    arcmin  DEm       Declination J2000 (minutes) (1)
  32- 33  I2    arcsec  DEs       ? DEs Declination J2000 (seconds) (1)
  35- 39  F5.2  mag     Vmag      Visual magnitude (1)
  41- 45  A5    ---     Sp        Spectral Type
  47- 54  A8    ---     LClass    Luminosity Class
  56- 64  A9    ---     alt       Other name
      66  A1    ---     note      [ a] a=not in the published atlas
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Note (1): data added at CDS, using the SIMBAD data-base.
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References:
  Morgan, W.W., Keenan, P.C. and Kellman, E. 1943, An Atlas of Stellas
    Spectra (Chicago: University of Chicago Press).
  Abt, H.A., Meinel, A.B., Morgan, W.W., and Tabscott, J.W. 1968,
    An Atlas of Low-Dispersion Grating Stellar Spectra.
  Yamashita, Y., Nariai, K., Norimoto, Y. 1977, An Atlas of Representative
    Stellar Spectra (Tokyo: University of Tokyo Press).
  Morgan, W.W., Abt, H.A., and Tabscott, J.W. 1978, Revised MK Spectral
    Atlas for Types Earlier than the Sun
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(End)                     Paul Kuin (NASA/ADC) 25-Feb-1997