Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/journal_tables/A+AS/119/265/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp 

J/A+AS/119/265      High probability quasar candidates (Iovino+, 1996)
================================================================================
A large sample of objective prism quasar candidate.
      Iovino A., Clowes R., Shaver P.
     <Astron. Astrophys. Suppl. Ser. 119, 265 (1996)>
     =1996A&AS..119..265I      (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: QSOs
Keywords: quasars: general - surveys

Description:
    The Automated Quasar Detection (AQD) technique has been applied to six
    connected fields near the South Galactic Pole. A comparison with the
    Veron & Veron catalogue (1993) <VII/188> and the Cristiani et al.
    compilation (1995A&AS..112..347C) shows that AQD rediscovered ~75% of
    the known quasars with non-overlapping objective-prism spectra present
    in these fields (~40% if considering only the high degree candidates).
    A list of 1592 high grade candidates is given, including the results
    of cross-correlation with X-ray and radio catalogues.

File Summary:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
table3             80      1592  List of high probability candidates
--------------------------------------------------------------------------------

Byte-by-byte Description of file: table3
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   3-  4  I2     h       RAh      Right ascension (1950)
   6-  7  I2     min     RAm      Right ascension (1950)
   9- 12  F4.1   s       RAs      Right ascension (1950)
      15  A1     ---     DE-      Declination sign
  16- 17  I2     deg     DEd      Declination (1950)
  19- 20  I2     arcmin  DEm      Declination (1950)
  22- 23  I2     arcsec  DEs      Declination (1950)
  27- 31  F5.2   mag     mcosmos  Prism instrumental magnitude
  35- 39  F5.2   mag     Vcosmos  Indicative magnitude in the V band
  43- 46  F4.2   ---     zlya     Tentative redshift
  50- 53  F4.2   ---     GRADE    Grade
  58- 60  A3     ---     Notes    [?*QXR ] Notes (1)
--------------------------------------------------------------------------------
Note (1): ? - possible overlapping spectrum
          * - good quality candidate
          Q - known quasar
          X - known ROSAT X--ray source
          R - known radio source
--------------------------------------------------------------------------------

Courtesy: A. Iovino <iovino@brera.mi.astro.it>

References:
    Veron & Veron catalogue (1993)          =Catalogue <VII/188>
    Cristiani S. et al. 1995, A&AS 112, 347 =1995A&AS..112..347C
================================================================================
(End)                                         Patricia Bauer [CDS]   25-Mar-1996
Go to ADC Home Page