J/MNRAS/416/1900 CENSORS + other 1.4GHz sources (Rigby+, 2011)
The luminosity-dependent high-redshift turnover in the steep spectrum radio
luminosity function: clear evidence for downsizing in the radio-AGN population.
Rigby E.E., Best P.N., Brookes M.H., Peacock J.A., Dunlop J.S.,
Rottgering H.J.A., Wall J.V., Ker L.
<Mon. Not. R. Astron. Soc., 416, 1900-1915 (2011)>
=2011MNRAS.416.1900R 2011MNRAS.416.1900R
ADC_Keywords: Surveys ; Radio sources ; Redshifts ; Galaxies, photometry
Keywords: galaxies: active - galaxies: evolution - galaxies: high-redshift -
galaxies: luminosity function, mass function
Abstract:
This paper presents a new grid-based method for investigating the
evolution of the steep-spectrum radio luminosity function, with the
aim of quantifying the high-redshift cut-off suggested by previous
work. To achieve this, the Combined EIS-NVSS Survey of Radio Sources
(CENSORS) has been developed; this is a 1.4-GHz radio survey,
containing 135 sources complete to a flux density of 7.2mJy, selected
from the NRAO VLA Sky Survey (NVSS) over 6deg2 of the ESO Imaging
Survey Patch D (EISD). The sample is currently 7% spectroscopically
complete, with the remaining redshifts estimated via the K-z or I-z
magnitude-redshift relation. CENSORS is combined with additional radio
data from the Parkes All-Sky, Parkes Selected Regions, Hercules and
Very Large Array (VLA) COSMOS samples to provide comprehensive
coverage of the radio power versus redshift plane. The redshift
distributions of these samples, together with radio source count
determinations, and measurements of the local luminosity function,
provide the input to the fitting process.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
censors.dat 147 147 *CENSORS data table
hercules.dat 27 56 The Hercules sample
wp85.dat 29 83 The WP85 sample
psr.dat 26 74 The PSR sample
--------------------------------------------------------------------------------
Note on censors.dat: This table provides an up-to-date summary of the
CENSORS data. It draws together the key properties presented in
Papers I, II and III, updating these where relevant.
--------------------------------------------------------------------------------
See also:
J/A+AS/58/1 : 1412MHz cat. of Westerbork survey. I. (Windhorst+, 1984)
J/MNRAS/216/173 : Bright extragalactic radio sources at 2.7GHz (Wall+, 1985)
J/MNRAS/238/1171 : PSR optical/IR observations (Dunlop+, 1989)
J/MNRAS/346/627 : CENSORS (Combined EIS-NVSS Survey) catalog (Best+, 2003)
J/MNRAS/366/1265 : CENSORS infrared imaging (Brookes+, 2006)
J/MNRAS/385/1297 : CENSORS spectroscopic observations (Brookes+, 2008)
Byte-by-byte Description of file: censors.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- CENSORS [1/150] CENSORS sequential number
4- 7 A4 --- n_CENSORS Individual notes (1)
8- 13 F6.4 --- z Redshift, estimated redshift or redshift limit
15 I1 --- n_z [1/4] Redshift type, 1=spectroscopic (2)
17 I1 --- C [0/2] Object class: 0=AGN, 1=quasar,
2=starburst galaxy
19- 20 I2 h RA.h Radio right ascension (J2000) (4)
22- 23 I2 min RA.m Radio right ascension (J2000) (4)
25- 29 F5.2 s RA.s Radio right ascension (J2000) (4)
31 A1 --- DE.- Radio declination sign (J2000) (4)
32- 33 I2 deg DE.d Radio declination (J2000) (4)
35- 36 I2 arcmin DE.m Radio declination (J2000) (4)
38- 41 F4.1 arcsec DE.s Radio declination (J2000) (4)
43- 47 F5.1 mJy S1.4 NVSS flux density at 1.4GHz
49- 52 F4.1 mJy e_S1.4 rms uncertainty on S1.4
54 A1 --- Mor [SDTME] Morphology (5)
56 A1 --- l_LAS Limit flag on LAS
57- 61 F5.1 arcsec LAS Largest angular size of the radio source
63- 64 I2 h RAh.h ? Host right ascension (J2000) (6)
66- 67 I2 min RAh.m ? Host right ascension (J2000) (6)
69- 73 F5.2 s RAh.s ? Host right ascension (J2000) (6)
75 A1 --- DEh.- ? Host declination sign (J2000) (6)
76- 77 I2 deg DEh.d ? Host declination (J2000) (6)
79- 80 I2 arcmin DEh.m ? Host declination (J2000) (6)
82- 85 F4.1 arcsec DEh.s ? Host declination (J2000) (6)
87- 90 F4.1 arcsec Kap ? Aperture radius used to measure K-magnitude
92 A1 --- l_Kmag Limit flag on Kmag
93- 97 F5.2 mag Kmag ? K magnitude corrected to the
standard 63.9kpc aperture
99-102 F4.2 mag e_Kmag ? rms uncertainty on Kmag
104-107 A4 --- --- [EISD]
108-110 I3 --- EISD [1/199] EISD name (ESO Imaging Survey patch D)
111-114 A4 --- n_EISD Note on EISD (for combination of EISD)
116-120 F5.2 mag Imag ? I magnitude
122-125 F4.2 mag e_Imag ? rms uncertainty on Imag
127-131 F5.2 mag Vmag ? V magnitude
133-136 F4.2 mag e_Vmag ? rms uncertainty on Vmag
138-142 F5.2 mag Bmag ? B magnitude
144-147 F4.2 mag e_Bmag ? rms uncertainty on Bmag
--------------------------------------------------------------------------------
Note (1): Notes:
* CENSORS 58 has been removed from the sample due to its proximity to a
bright star
* CENSORS 66 represents the combination of CENSORS 66 and 82
* CENSORS 84 represents the combination of CENSORS 84 and 85
Note (2): Redshift type as follows:
1 = spectroscopic
2 = K-z estimate
3 = K-z limit
4 = I-z estimate
Note (4): Radio position from the VLA observations described in Paper I
Note (5): Radio morphology as follows:
S = single
D = double
T = triple
M = multiple
E = extended diffuse
Note (6): Host galaxy position, taken from the K-band imaging if present,
optical I- band imaging if not.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hercules.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- WSTB Hercules name (53WNNNA)
9- 13 F5.3 --- z Redshift
15 I1 --- n_z [1/4] Redshift type, 1=spectroscopic (1)
17- 21 F5.1 mJy S1.4 Flux density at 1.4GHz
23- 27 F5.2 --- SI Spectral index (measured between 1.4GHz
and 0.6GHz)
--------------------------------------------------------------------------------
Note (1): Redshift type as follows:
1 = spectroscopic
2 = photo-z from Waddington et al. (2001MNRAS.328..882W 2001MNRAS.328..882W)
3 = K-z limit from K-band magnitude in either
Rigby et al. (2007, Cat. J/MNRAS/380/1449) or
Waddington et al. (2000, Cat. J/MNRAS/317/801)
4 = K-z value from Rigby et al. (2007, Cat. J/MNRAS/380/1449) for 53W054B,
whose host galaxy was misidentified by Waddington et al.
(2000, Cat. J/MNRAS/317/801)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: wp85.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name WP85 name (HHMM-DD)
10- 14 F5.3 --- z Redshift
16 I1 --- n_z [1/3] Redshift type, 1=spectroscopic (1)
18- 22 F5.2 mJy S1.4 Flux density at 1.4GHz converted from the
original 2.7 GHz values
24- 27 F4.2 --- SI Spectral index (measured between 2.7GHz
and 5GHz)
29 A1 --- Note [A] A for WP85 additional sources
--------------------------------------------------------------------------------
Note (1): Redshift type as follows:
1 = spectroscopic,
2 = estimated z taken from the WP85 paper (Wall & Peacock, 1985,
Cat. J/MNRAS/216/173)
3 = estimated z taken from Burgess & Hunstead (2006, Cat. J/AJ/131/100)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: psr.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- PKS PSR name (HHMM-DDd) (Parkes Selected Regions)
10- 14 F5.3 --- z Redshift
16 I1 --- n_z [1/5] Redshift type, 1=spectroscopic (1)
18- 21 F4.2 mJy S1.4 Flux density at 1.4GHz converted from the
original 2.7 GHz values
23- 26 F4.2 --- SI Spectral index (measured between 1.4GHz
and 5GHz)
--------------------------------------------------------------------------------
Note (1): Redshift type as follows:
1 = spectroscopic
2 = K-z estimated redshift
3 = Dunlop & Peacock (1993MNRAS.263..936D 1993MNRAS.263..936D) estimated z derived from
spectral fitting
4 = K-z using the B-R colour to get the K magnitude
5 = K-z limit
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Best et al., Paper I 2003MNRAS.346..627B 2003MNRAS.346..627B, Cat. J/MNRAS/346/627
Brookes et al., Paper II 2006MNRAS.366.1265B 2006MNRAS.366.1265B, Cat. J/MNRAS/366/1265
Brookes et al., Paper III 2008MNRAS.385.1297B 2008MNRAS.385.1297B, Cat. J/MNRAS/385/1297
(End) Patricia Vannier [CDS] 26-Mar-2012