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J/AJ/121/2381       UBRI photometry of radio galaxies        (Brown+, 2001)
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The evolution of radio galaxies at intermediate redshift.
    Brown M.J.I., Webster R.L., Boyle B.J.
   <Astron. J. 121, 2381 (2001)>
   =2001AJ....121.2381B
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ADC_Keywords: Galaxies, radio ; Photometry, UBVRI ; Redshifts
Keywords: galaxies: active - galaxies: evolution -
          galaxies: luminosity function, mass function - radio continuum

Abstract:
    We describe a new estimate of the radio galaxy 1.4 GHz luminosity
    function and its evolution at intermediate redshifts (z~0.4).
    Photometric redshifts and color selection have been used to select
    B_J_<23.5 early-type galaxies from the Panoramic Deep Fields, a
    multicolor survey of two 25deg^2^ fields. Approximately 230 radio
    galaxies have then been selected by matching early-type galaxies with
    NVSS radio sources brighter than 5mJy. Estimates of the 1.4GHz
    luminosity function of radio galaxies measure significant evolution
    over the observed redshift range. For an {Omega}_M_=1 cosmology the
    evolution of the radio power is consistent with luminosity evolution
    where P(z)~P(0)(1+z)^K_L_^ and 3<K_L_<5. The observed evolution is
    similar to that observed for UVX and X-ray selected active galactic
    nuclei and is consistent with the same physical process being
    responsible for the optical and radio luminosity evolution of active
    galactic nuclei.

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table2.dat     78      242   Radio Galaxy Catalog
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See also:
    VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)

Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
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   1- 14  A14   ---     Name      NVSS source name
  16- 17  I2    h       RAh       Right Ascension (J2000)
  19- 20  I2    min     RAm       Right Ascension (J2000)
  22- 25  F4.1  s       RAs       Right Ascension (J2000)
      27  A1    ---     DE-       Sign of the Declination (J2000)
  28- 29  I2    deg     DEd       Declination (J2000)
  31- 32  I2    arcmin  DEm       Declination (J2000)
  34- 37  F4.1  arcsec  DEs       Declination (J2000)
  39- 43  F5.1  mJy     S1.4GHz   Flux density at 1.4 GHz
  45- 49  F5.2  mag     Bmag      UK Schmidt B_J_ band photographic plate
                                   magnitude
  51- 55  F5.2  mag     U-B       ? UK Schmidt (U-B_J_) photographic plate color
  57- 60  F4.2  mag     B-R       UK Schmidt (B_J_-R) photographic plate color
  62- 66  F5.2  mag     R-I       ? UK Schmidt (R-I) photographic plate color
  68- 72  F5.3  ---     z         Photometric redshift
  74- 77  F4.1  arcsec  Offset    The Optical-NVSS offset
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History:
    From electronic version of the journal
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(End)                   Greg Schwarz [AAS],  Patricia Bauer [CDS]    30-Aug-2001