Access to Astronomical Catalogues

J/MNRAS/326/1455    The CLASS blazar survey. I.              (Marcha+, 2001)
The CLASS blazar survey - I. Selection criteria and radio properties.
    Marcha M.J., Caccianiga A., Browne I.W.A., Jackson N.
   <Mon. Not. R. Astron. Soc. 326, 1455 (2001)>
   =2001MNRAS.326.1455M
ADC_Keywords: BL Lac objects ; QSOs ; Magnitudes ; Radio lines

Keywords: surveys - galaxies: actives - BL Lacertae objects: general -
          radio continuum: general

Abstract:
    This paper presents a new complete and well-defined sample of
    flat-spectrum radio sources (FSRS) selected from the Cosmic Lens
    All-Sky Survey (CLASS), with the further constraint of a bright
    (mag≤17.5) optical counterpart. The sample has been designed to
    produce a large number of low-luminosity blazars in order to test the
    current unifying models in the low-luminosity regime. In this first
    paper the new sample is presented and the radio properties of the 325
    sources contained therein are discussed.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        84      325   The CLASS bright sample


See also:
            VIII/40 : GB6 catalog of radio sources (Gregory+ 1996)
   J/MNRAS/329/877 : The CLASS blazar survey. II. (Caccianiga+, 2002)
   J/MNRAS/348/937 : The CLASS blazar survey. III. (Caccianiga+, 2004)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label    Explanations

   1-  3  A3    ---     ---      [GB6]
   4- 17  A14   ---     GB6      GB6 designation (JHHMMSS+DDMMSS)
  19- 20  I2    h       RAh      Right ascension (J2000.0)
  22- 23  I2    min     RAm      Right ascension (J2000.0)
  25- 29  F5.2  s       RAs      Right ascension (J2000.0)
      31  A1    ---     DE-      Declination sign (J2000.0)
  32- 33  I2    deg     DEd      Declination (J2000.0)
  35- 36  I2    arcmin  DEm      Declination (J2000.0)
  38- 41  F4.1  arcsec  DEs      Declination (J2000.0)
  43- 47  F5.2  mag     Rmag     R magnitude
  49- 52  I4    mJy     S1.4     NVSS flux density at 1.4GHz
  54- 57  I4    mJy     S4.8     GB6 flux density at 4.8GHz
      59  A1    ---     l_S8.4   Limit flag on S8.4
  60- 63  I4    mJy     S8.4     VLA flux density at 8.4GHz
  65- 69  F5.2  ---     alf1     Spectral index between 1.4GHz and 4.8GHz
      71  A1    ---     l_alf2   Limit flag on Sp+Index
  72- 76  F5.2  ---     alf2     ?  Spectral index between 1.4GHz and 8.4GHz
  78- 79  A2    ---     Flag     [s? ] Steep spectrum (1)
  81- 84  F4.2  ---     alf1c    ? Corrected Spectral index between 1.4GHz and
                                     4.8GHz

Note (1): Flag indicating whether the source has been re-classified as steep,
    between 1.4 and 4.8GHz on the basis of a re-analysis of the NVSS map


History:
    From electronic version of the journal
(End)                                        Patricia Bauer [CDS]    15-Apr-2002