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III/195    Atlas of Optical Spectral Classification OB Stars (Walborn+ 1990)

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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file objects.dat 66 78 List of OB stars included in the Atlas fits/* 0 78 Directory with the 78 FITS Spectra
Byte-by-byte Description of file: objects.dat
Bytes Format Units Label Explanations
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
Note (1): data added at CDS, using the SIMBAD data-base.
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
(End) Paul Kuin (NASA/ADC) 25-Feb-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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