J/MNRAS/329/227 2dF Galaxy Redshift Survey. II. (Sadler+, 2002)
Radio sources in the 2dF Galaxy Redshift Survey -
II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4GHz
Sadler E.M., Jackson C.A., Cannon R.D., McIntyre V.J., Murphy T.,
Bland-Hawthorn J., Bridges T., Cole S., Colless M., Collins C., Couch W.,
Dalton G., de Propris R., Driver S.P., Efstathiou G., Ellis R.S.,
Frenk C.S., Glazebrook K., Lahav O., Lewis I., Lumsden S., Maddox S.,
Madgwick D., Norberg P., Peacock J.A., Peterson B.A., Sutherland W.,
Taylor K.
<Mon. Not. R. Astron. Soc., 329, 227 (2002)>
=2002MNRAS.329..227S 2002MNRAS.329..227S
ADC_Keywords: Radio sources ; Redshifts ;
Keywords: galaxies: active - galaxies: luminosity function, mass function -
galaxies: starburst - radio continuum: galaxies
Abstract:
We have cross-matched the 1.4-GHz NRAO VLA Sky Survey (NVSS, Condon
1998, Cat. VIII/65) with the first 210 fields observed in the 2dF
Galaxy Redshift Survey (2dFGRS, Colless, 2001, Cat. VII/226),
covering an effective area of 325°2 (about 20 per cent of the
final 2dFGRS area). This yields a set of optical spectra of 912
candidate NVSS counterparts, of which we identify 757 as genuine radio
identifications - the largest and most homogeneous set of radio source
spectra ever obtained. The 2dFGRS radio sources span the redshift
range z=0.005 to 0.438, and are a mixture of active galaxies (60 per
cent) and star-forming galaxies (40 per cent). About 25 per cent of
the 2dFGRS radio sources are spatially resolved by NVSS, and the
sample includes three giant radio galaxies with projected linear size
greater than 1 Mpc. The high quality of the 2dF spectra means we can
usually distinguish unambiguously between AGN and star-forming
galaxies. We make a new determination of the local radio luminosity
function at 1.4 GHz for both active and star-forming galaxies, and
derive a local star formation density of
0.022±0.004M☉/yr/Mpc3 (H0=50km/s/Mpc)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 125 903 Candidate 2dFGRS/NVSS radio sources
table1b.dat 119 9 Additional galaxies
table5.dat 78 10 Ultraluminous IRAS Galaxies (ULIRGS) in the sample
table6.dat 91 6 Galaxies detected as X-ray sources in the
ROSAT All-Sky Survey (RASS, Cat. IX/10)
notes.dat 80 69 Notes to table1
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See also:
VII/226 : The 2dF Galaxy Redshift Survey (Colless+ 2001)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
J/ApJS/129/547 : RBSC-NVSS sample. I. (Bauer+, 2000)
Byte-by-byte Description of file: table1.dat table1b.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- 2dFGRS 2dFGRS designation
11 A1 --- n_2dFGRS [*] indicates a note in notes.dat file
13- 25 A13 --- Name Other name
27- 28 I2 h RAh Right ascension (J2000)
30- 31 I2 min RAm Right ascension (J2000)
33- 37 F5.2 s RAs Right ascension (J2000)
39 A1 --- DE- Declination sign (J2000)
40- 41 I2 deg DEd Declination (J2000)
43- 44 I2 arcmin DEm Declination (J2000)
46- 49 F4.1 arcsec DEs Declination (J2000)
51- 54 F4.1 arcsec Offset ? Offset between 2dFGRS (optical) and
NVSS (radio) positions
56- 60 F5.2 mag bJmag Total blue bJ magnitude from the 2dFGRS
data base (1)
62- 67 F6.1 mJy S1.4GHz Flux density at 1.4GHz, from the NVSS
(VIII/65) catalogue (2)
69- 73 F5.3 Jy S60um ? IRAS flux density at 60µm
75- 81 F7.4 --- z ? Heliocentric redshift, from 2dFGRS
observations unless otherwise indicated in
the notes
83 I1 --- Qual 2dFGRS spectrum quality code (3)
85- 89 A5 --- SpClass Spectral class, based on our visual
classification
91-125 A35 --- Com Comments
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Note (1): The magnitudes listed here are taken from the 2000 May version
of the data base
Note (2): Where a source is split into more than one component in the NVSS
(1998AJ....115.1693C 1998AJ....115.1693C) catalogue, this is indicated in the notes at
the end of the table, and the value quoted here is the sum of all
the components.
Note (3): 2dFGRS spectrum quality code:
Q=4 or 5 are excellent-quality spectra,
Q=3 acceptable,
Q=0, 1 or 2 poor-quality.
Galaxies with Q<3 are excluded from further analysis because their
redshifts are highly uncertain. Checks against repeat observations and
published redshifts show that 2dFGRS redshifts with Q=3 are about 90%
reliable, and those with Q=4 or 5 are 99% reliable (Colless et al.,
2001, Cat. VII/226).
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- 2dFGRS 2dFGRS designation
12- 27 A16 --- IRAS IRAS designation
29- 30 A2 --- SpClass Spectral class
32- 37 F6.4 --- z Redshift
39- 44 F6.2 mag MAG Absolute magnitude
46- 50 F5.2 [W/Hz] logP1.4GHz log10 of 1.4GH radio power
52 A1 --- l_logS60/S100 Limit flag on logS60/S100
53- 57 F5.2 --- logS60/S100 log10 of S60um/S100um ratio
59- 63 F5.2 solLum logLFIR log10 of FIR luminosity
65- 78 A14 --- Ref References (1)
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Note (1): References:
C95 = Clowes et al., 1995MNRAS.275..819C 1995MNRAS.275..819C
C96 = Clements et al., 1996, Cat. J/MNRAS/269/459
C99 = Clements et al., 1999MNRAS.302..391C 1999MNRAS.302..391C
K98 = Kim & Saunders, 1998ApJS..119...41K 1998ApJS..119...41K
S92 = Strauss et al., 1992, Cat. II/174
V99 = Veilleux et al., 1999, Cat. J/ApJ/522/113
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- 2dFGRS 2dFGRS designation
12- 32 A21 --- 1RXS ROSAT designation
34- 35 A2 --- SpClass Spectral class
37- 42 F6.4 --- z Redshift
44- 49 F6.2 mag MAG Absolute magnitude
51- 55 F5.2 [W/Hz] logP1.4GHz log10 of the 1.4GHz radio power
57- 60 F4.2 s-1 CR RSBC count rate
62- 65 F4.2 s-1 e_CR rms uncertainty on RSBC count rate
67- 78 A12 --- Type Type of galaxy
80- 91 A12 --- Name Other name
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- 2dFGRS 2dFGRS designation
12- 80 A69 --- Note Text of the note
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History:
From electronic version of the journal
References:
Sadler et al., Paper I 1999PASA...16..247S 1999PASA...16..247S
(End) James Marcout, Patricia Bauer [CDS] 18-Feb-2002