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III/164     Cat of Eq Widths of Interstellar 217 nm Band (Friedemann 1992)
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A Master Catalogue of Equivalent Widths of the Interstellar 217 nm Band
    Friedemann C.
    <CDS Inf. Bull., No. 40, p. 31 (1992)>
    =1992BICDS..40...31F
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ADC_Keywords: Equivalent widths; Interstellar medium

Description:
   (from CDS Inf. Bull. 40, 31)
   The main task of the catalogue consists in a comprehensive collection of 
   equivalent widths of the 217 nm band derived from both spectrophotometric 
   and filterphotometric measurements obtained with TD-1, OAO-2 and ANS 
   satellites. These data concern reddened O, B stars with color excesses 
   E(B-V) >= 0.02 mag.

Introduction:
   The relative errors amount to about {delta}A/A = +/- 0.10, {delta}B/B = 
   +/- 0.02 and {delta}C/C = +/- 0.03.

File Summary:
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 FileName       Lrecl  Records   Explanations
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ReadMe             80        .   This file
data.dat           61     2861   Catalog Data
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Byte-by-byte Description of file: data.dat
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   Bytes Format  Units   Label    Explanations
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   1-  9  A9     ---     ID       HD or BD number
  11- 15  F5.2   mag     E(B-V)   ? E(B-V) Color excess
  17- 20  I4     A       lambda_c ? Central wavelength of the 2200 band (A)
  22- 28  F7.4   ---     A        A parameter (defined in the publication)
  30- 36  F7.4   ---     B        B parameter (defined in the publication)
  38- 44  F7.4   ---     C        C parameter (defined in the publication)
  46- 49  I4     A       W       *Equivalent width (A)
  51- 53  I3     ---     N        Number of observations
  55- 61  A7     ---     rem     *Remarks
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Note on W:
   A negative value indicates that a flat minimum instead of a maximum has 
     been found in the extinction curve in the wavelength region of the 2200 A 
     band. In these cases W was computed with lambda_c = 2182 A.

Note on rem:
   O:  Filterphotometry from OAO-2
   J:  Spectral flux data from LSR of IUE
   C:  The wavelength of the centre of the absorption band has been fixed 
       to the average value lambda_c = 2182 A because the searching procedure 
       for lambda_c had led to a value lambda_c outside the presumed interval
       from 2182 - 2228 A. The parameters A B C and W were computed with  
       the average value lambda_c = 2182 A.D
   D:  within  one arcminute of the pointing position at least two stars 
       are present (Wesselius et al. 1982)
   V:  Ultraviolet ANS data (Wesselius et al., 1982) indicate variability

Remarks:
   The master catalogue contains all relevant data sets published earlier (see 
   Dorschner, 1984; Friedemann, 1987; Friedemann, 1988) by the CDS and should
   replace them.

References:
   Dorschner J., Friedemann C., Gurtler J. and Schielicke R. 1984, Bull. Inf.
     CDS 27, 137
   Friedemann C. 1987, Bull. Inf. CDS 32, 77
   Friedemann C. 1988, Bull. Inf. CDS 35, 157
   Guertler J., Schielicke R., Dorschner J., Friedemann C: 1982, 
     Astron. Nachr.  303, 105
   Wesselius P.R., van Duinen R.J., de Jonge A.R.W., Aalders J.W.G., 
     Luinge W., Wildeman K.J.: 1982, Astron. Astrophys. Suppl. Ser.  49 , 427
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(End)                                  Julie Anne Watko [SSDOO/ADC]  04-JUN-1996