Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/7/7081A/

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

This catalog does not currently have a complete standard document. The ADC data viewer will not work for catalogs without standard documents.

You can access the files described here from the anonymous FTP directory:
   ftp://adc.astro.umd.edu/pub/adc/archives/catalogs/7/7081A/. 

VII/81A     Second Catalogue of X-ray Sources (Amnuel+ 1982)
================================================================================
Second Catalogue of X-Ray Sources
    Amnuel P.R., Guseinov O.H., Rakhamimov Sh.Yu.
    <Ap&SS, 82, 3 (1982)>
================================================================================
ADC_Keywords: X-ray sources

Description:
   The catalog is a compilation of X-ray sources containing 677 objects known
   as of 1979 September.  X-ray data for 677 sources are the result of X-ray
   sky surveys by rockets, balloons, and satellites during 1964-1979.  The sky
   survey is practically complete to X-ray intensities of nearly 4 micro-Jy in
   the 2-6 keV range.  The current version does not include the investigation
   by HEAO 2.  The catalog includes source names, positions of the maximum
   probability densities, date of the measurements, the type of measuring
   systems, the ranges at which the measurement was performed, maximum
   intensities for constant sources, and ratio of the maximum observed value
   of intensity to the minimum one for variable sources.

File Summary:
--------------------------------------------------------------------------------
 FileName       Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
data_01.dat       124     1974   Catalog Data
--------------------------------------------------------------------------------

Byte-by-byte Description of file: data_01.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  n  In     ---     ---      ---
--------------------------------------------------------------------------------

================================================================================
(End)                                 Gail L. Schneider [SSDOO/ADC]  25-Sep-1995
Go to ADC Home Page