Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/2/2175/

The following is the "ReadMe" document that describes this ADC catalog.

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You can access the files described here from the anonymous FTP directory:
   ftp://adc.astro.umd.edu/pub/adc/archives/catalogs/2/2175/. 

II/175      Catalogue of 166 Ultraviolet Extinction Curves (Krelowski+ 1992)
================================================================================
Catalogue of 166 Ultraviolet Extinction Curves
    Krelowski J., Papaj J., Wegner W.
    <CDS Inf. Bull. No. 41, p. 23 (1992)>
    Papaj J., Krelowski J. and Wegner W.
    <Mon. Not. R. Astron. Soc., 252, 403 (1991)>
    =1991MNRAS.252..403P
================================================================================
ADC_Keywords: Photometry, ultraviolet

Description:
   (from CDS)
   The catalogue includes 166 extinction curves derived from low resolution
   ultraviolet spectra. The sample contains stars earlier than B6 (mainly 
   dwarfs and giants), which were available in the set of spectra obtained with
   the Sky Survey telescope (S2/68) in the ESRO TD-1 satellite (Jamar et al.,
   1977, Macau-Hercot et al., 1978). The extinction curves cover the wavelength
   range 1360-2540 A (7.35 - 3.94 um^-1^) and yielding 60 data points. They
   are normalized to the broad band (~300 A) photometric measurements centered
   at 2740A (3.65 um^-1^). A special system of standards ("artificial standards
   - Papaj, Wegner and Krelowski (1990)) have been used. It made possible to
   calculate extinction curves for reddening as small as E(B-V) ~ 0.05. The 
   procedure has been fully described by Papaj, Wegner and Krelowski (1991). 
   The catalogue may be useful both to obtain intrinsic stellar atmosphere 
   parameters (when dereddened spectra are needed) and to determine properties 
   of dust in single interstellar clouds.

File Summary:
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 FileName       Lrecl  Records   Explanations
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ReadMe             80        .   This file
Intro              80       66   Documentation describing file format
extinction.dat     95     2158   Extinction Data
data.dat           97      166   Primary Data for Program Stars
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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-  n  In     ---     ---      ---
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Byte-by-byte Description of file: extinction.dat
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   Bytes Format  Units   Label    Explanations
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   1-  n  In     ---     ---      ---
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References:
   Krelowski J., Papaj J. and Wegner W. 1992, Bull. Inf. CDS, No. 41, 23.
   Papaj J., Krelowski J. and Wegner W. 1991, Mon. Not. R. Astron. Soc., 252,
     403.
   Papaj J., Wegner W. and Krelowski J. 1990, Mon. Not. R. Astron. Soc., 246,
     408.
================================================================================
(End)                                  Julie Anne Watko [SSDOO/ADC]  05-JUN-1996
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