J/MNRAS/390/819 Combined NVSS-FIRST Galaxies (CoNFIG) sample (Gendre+, 2008)
The Combined NVSS-FIRST Galaxies (CoNFIG) sample.
I. Sample definition, classification and evolution.
Gendre M.A., Wall J.V.
<Mon. Not. R. Astron. Soc., 390, 819-828 (2008)>
=2008MNRAS.390..819G 2008MNRAS.390..819G
ADC_Keywords: Surveys ; Radio sources ; Morphology
Keywords: surveys - galaxies: active -
galaxies: luminosity function, mass function - galaxies: statistics -
radio continuum: galaxies
Abstract:
The CoNFIG (Combined NVSS-FIRST Galaxies) sample is a new sample of
274 bright radio sources at 1.4GHz. It was defined by selecting all
sources with S1.4GHz-1.3Jy from the NRAO Very Large Array (VLA) Sky
Survey (NVSS) in the north field of the Faint Images of the Radio Sky
at Twenty centimetres (FIRST) survey. New radio observations obtained
with the VLA for 31 of the sources are presented. The sample has
complete Fanaroff-Riley (FRI)/FRII morphology identification; optical
identifications and redshifts are available for 80 and 89 per cent of
the sample, respectively, yielding a mean redshift of ∼0.71. One of
the goals of this survey is to get better definitions of luminosity
distributions and source counts of FRI/FRII sources separately, in
order to determine the evolution of the luminosity function for each
type of source. We present a preliminary analysis, showing that these
data are an important step towards examining various evolutionary
schemes for these objects and to confirm or correct the dual
population unified scheme for radio active galactic nuclei (AGN).
Improving our understanding of radio galaxy evolution will give better
insight into the role of AGN feedback in galaxy formation.
Description:
The CoNFIG sample is defined as all sources with S1.4GHz≥1.3Jy from
the NVSS catalogue within the north region of the FIRST survey (1.5-sr
region defined roughly by -8°≤DE≤64° and 7h≤RA≤17h),
resulting in a sample of 261 objects.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
config.dat 116 274 Data for CoNFIG sample
tablea1.dat 58 215 Optical identifications for the CoNFIG sources
tableb1.dat 54 243 Data for CoNFIG-2 sample
tableb2.dat 36 525 Data for CoNFIG-3 and CoNFIG-4 sample
refs.dat 74 97 References
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See also:
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
Byte-by-byte Description of file: config.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number,
[GW2008] CoNFIG NNN in Simbad
5- 19 A15 --- Name Name
20 A1 --- n_Name [*] * for 3CRR sources from Laing et al.
(1983MNRAS.204..151L 1983MNRAS.204..151L)
22- 23 I2 h RAh NVSS right ascension (J2000)
25- 26 I2 min RAm NVSS right ascension (J2000)
28- 32 F5.2 s RAs NVSS right ascension (J2000)
34 A1 --- DE- NVSS declination sign (J2000)
35- 36 I2 deg DEd NVSS declination (J2000)
38- 39 I2 arcmin DEm NVSS declination (J2000)
41- 45 F5.2 arcsec DEs NVSS declination (J2000)
47- 48 A2 --- RT Radio type (G1)
50- 55 F6.4 --- z ? Redshift (from Simbad or NED)
56 A1 --- n_z [p] p: photometric redshift derived from
the R-z relation
58- 63 F6.1 Jy S178 ? Flux density at 178MHz
65- 71 F7.1 mJy S365 ? Flux density at 365MHz
73- 78 F6.2 Jy S408 ? Flux density at 408MHz
80- 87 F8.1 mJy S1400 ? Flux density at 1.4GHz
89- 95 F7.3 Jy S2700 ? Flux density at 2.7GHz
98-102 F5.2 Jy S5000 ? Flux density at 5.0GHz
104-108 F5.2 --- alpha ? Low spectral index (S∝νalpha)
109 A1 --- f_alpha [+] Problematic alpha (2)
110-112 I3 --- Ref ? Reference, in refs.dat file
114-116 A3 --- Note Indidivual notes (3)
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Note (2): the '+' indicates sources for which the value is derived from a
non-satisfactory single-power-low fit of the logS-logν relation.
Note (3): Notes as follows:
N = No optical counterpart identified above the SSS limit.
V = One of the 52 sources with uncertain morphology from the 1.4GHz
FIRST contours. Contours were obtained from our VLA
A-configuration observations.
A = One of the 52 sources with uncertain morphology from the 1.4GHz
FIRST contours. Contours were obtained from NRAO archives.
S = Steep-spectrum QSO, since the source has a stellar-type optical
counterpart and is classified as FRII.
1 = Because of the very low quality of the data for this source, its
morphology remains uncertain.
2 = At first, this source looked like a steep-spectrum source with an
FRI morphology. However, it is actually a well known radio loud
QSO used as a VLBA calibrator.
3 = This source's contours probably show a QSO with a suggestion of a jet.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number, [GW2008] CoNFIG NNN in Simbad
4 A1 --- n_Seq [z] Source without spectroscopic redshift (1)
6- 7 A2 --- MType Morphological type (G1)
9- 10 I2 h RAh NVSS right ascension (J2000)
12- 13 I2 min RAm NVSS right ascension (J2000)
15- 19 F5.2 s RAs NVSS right ascension (J2000)
21 A1 --- DE- NVSS declination sign (J2000)
22- 23 I2 deg DEd NVSS declination (J2000)
25- 26 I2 arcmin DEm NVSS declination (J2000)
28- 32 F5.2 arcsec DEs NVSS declination (J2000)
34 A1 --- OType [sg] Optical type (star or galaxy) (2)
36- 40 F5.2 mag Bjmag ? Bj magnitude (2)
42- 46 F5.2 mag R1mag ? R1 magnitude (2)
48- 52 F5.2 mag R2mag ? R2 magnitude (2)
54- 58 F5.2 mag Imag ? I magnitude (2)
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Note (1): 'z' indicates a source having an optical identification but no
spectroscopic redshift
Note (2): From SuperCosmos Sky Survey (Hambly et al., 2001MNRAS.326.1279H 2001MNRAS.326.1279H).
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh NVSS right ascension (J2000) (1)
4- 5 I2 min RAm NVSS right ascension (J2000) (1)
7- 11 F5.2 s RAs NVSS right ascension (J2000) (1)
13 A1 --- DE- NVSS declination sign (J2000) (1)
14- 15 I2 deg DEd NVSS declination (J2000) (1)
17- 18 I2 arcmin DEm NVSS declination (J2000) (1)
20- 24 F5.2 arcsec DEs NVSS declination (J2000) (1)
26- 27 A2 --- RT Radio type (G1)
29- 36 F8.1 mJy S1400 Flux density at 1.4GHz
38- 42 F5.2 mag Bmag ? B magnitude
44 I1 --- OType [1/2]? Optical type [unexplained in paper]
46- 50 F5.3 --- z ? Redshift (from Simbad or NED)
52- 54 I3 --- Ref ? References, in refs.dat file
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Note (1): Sources identified as [GW2008] CoNFIG-2 JHHMMSS.ss+DDMMSS.ss in Simbad
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Byte-by-byte Description of file: tableb2.dat
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Bytes Format Units Label Explanations
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1 I1 --- No Sample number, CoNFIG-3 or CoNFIG-4
3- 4 I2 h RAh NVSS right ascension (J2000) (1)
6- 7 I2 min RAm NVSS right ascension (J2000) (1)
9- 13 F5.2 s RAs NVSS right ascension (J2000) (1)
15 A1 --- DE- NVSS declination sign (J2000) (1)
16- 17 I2 deg DEd NVSS declination (J2000) (1)
19- 20 I2 arcmin DEm NVSS declination (J2000) (1)
22- 26 F5.2 arcsec DEs NVSS declination (J2000) (1)
28- 29 A2 --- RT Radio type (G1)
31- 36 F6.1 mJy S1400 Flux density at 1.4GHz
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Note (1): Sources identified as [GW2008] CoNFIG-N JHHMMSS.ss+DDMMSS.ss in Simbad
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref Reference number
5- 23 A19 --- BibCode BibCode
25- 58 A34 --- Aut Author's name
60- 74 A15 --- Com Comments
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Global notes:
Note (G1): Radio types are defined as follows:
I = Fanaroff & Riley (1974MNRAS.167p..31F 1974MNRAS.167p..31F) type I
II = Fanaroff & Riley (1974MNRAS.167p..31F 1974MNRAS.167p..31F) type II
C = Compact source
C* = Confirmed compact source from the VLBA calibrator list (see
Beasley et al., 2002, Cat. J/ApJS/141/13;
Fomalont et al., 2003, Cat. J/AJ/126/2562;
Petrov et al., 2005, Cat. J/AJ/129/1163,
2006, Cat. J/AJ/131/1872;
Kovalev et al., 2007, Cat. J/AJ/133/1236) or the
Pearson-Readhead survey (Pearson & Readhead, 1988ApJ...328..114P 1988ApJ...328..114P)
S* = Confirmed compact source which show a steep
(alpha≪0.6) spectral index. These are probably CSS sources
S = S type look compact with a steep spectral index, but are not
confirmed compact. They are probably unresolved FRII sources
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Apr-2009