J/AJ/121/2381 UBRI photometry of radio galaxies (Brown+, 2001)
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 2001AJ....121.2381B
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
BJ<23.5 early-type galaxies from the Panoramic Deep Fields, a
multicolor survey of two 25deg2 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 ΩM=1 cosmology the
evolution of the radio power is consistent with luminosity evolution
where P(z)∼P(0)(1+z)KL_^ and 3<KL<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 BJ band photographic plate
magnitude
51- 55 F5.2 mag U-B ? UK Schmidt (U-BJ) photographic plate color
57- 60 F4.2 mag B-R UK Schmidt (BJ-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
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 30-Aug-2001