J/MNRAS/439/545 Infrared-faint radio sources catalog (Collier+, 2014)
Infrared-faint radio sources: a new population of high-redshift radio galaxies.
Collier J.D., Banfield J.K., Norris R.P., Schnitzeler D.H.F.M.,
Kimball A.E., Filipovic M.D., Jarrett T.H., Lonsdale C.J., Tothill N.F.H.
<Mon. Not. R. Astron. Soc., 439, 545-565 (2014)>
=2014MNRAS.439..545C 2014MNRAS.439..545C
ADC_Keywords: Radio sources ; Infrared sources
Keywords: galaxies: active - galaxies: distances and redshifts -
galaxies: evolution - galaxies: high-redshift - infrared: galaxies -
radio continuum: galaxies
Abstract:
We present a sample of 1317 Infrared-faint radio sources (IFRSs) that,
for the first time, are reliably detected in the infrared, generated
by cross-correlating the Wide-field Infrared Survey Explorer (WISE)
all-sky survey with major radio surveys. Our IFRSs are brighter in
both radio and infrared than the first-generation IFRSs that were
undetected in the infrared by the Spitzer Space Telescope. We present
the first spectroscopic redshifts of IFRSs, and find that all but one
of the IFRSs with spectroscopy have z>2. We also report the first
X-ray counterparts of IFRSs, and present an analysis of radio spectra
and polarization, and show that they include gigahertz
peaked-spectrum, compact steep-spectrum and ultra-steep-spectrum
sources. These results, together with their WISE infrared colours and
radio morphologies, imply that our sample of IFRSs represents a
population of radio-loud active galactic nuclei at z>2. We conclude
that our sample consists of lower redshift counterparts of the extreme
first-generation IFRSs, suggesting that the fainter IFRSs are at even
higher redshift.
Description:
The 20cm radio data come from the Unified Radio Catalog (URC)
compiled by Kimball & Ivezic (2008AJ....136..684K 2008AJ....136..684K). This radio
catalogue combines data from the National Radio Astronomy Observatory
(NRAO) VLA Sky Survey (NVSS; Condon et al., 1998, Cat. VIII/65), Faint
Images of the Radio Sky at Twenty Centimeters (FIRST; Becker, White &
Helfand, 1995, cat. VIII/92), Green Bank 6cm survey (GB6; Gregory
et al., 1996, Cat. VIII/40), the Westerbork Northern Sky Survey
(WENSS; Rengelink et al. 1997; de Bruyn et al. 2000, Cat. VIII/62) and
the Sloan Digital Sky Survey Data Release 6 (SDSS DR6;
Adelman-McCarthy et al., 2008, Cat. II/282). We use updated NVSS and
FIRST data from the URC version 2.0 (Kimball & Ivezic, in
preparation), which includes a number of new sources as well as
updated positions and flux densities.
The IR data come from WISE (Wright et al. (WISE Team) 2009, Cat.
II/311), which is an all-sky survey centred at 3.4, 4.6, 12 and
22um (referred to as bands W1, W2, W3 and W4), with respective
angular resolutions of 6.1, 6.4, 6.5 and 12.0-arcsec (full width at
half-maximum, FWHM), and typical 5σ sensitivity levels of 0.08,
0.11, 1 and 6mJy, with sensitivity increasing towards the ecliptic
poles.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 394 1317 Full catalogue of 1317 Infrared-Faint Radio sources
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See also:
VIII/40 : GB6 catalog of radio sources (Gregory+ 1996)
VIII/62 : The Westerbork Northern Sky Survey (Leiden, 1998)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
VIII/79 : The VLA Low-frequency Sky Survey at 74MHz (Cohen+ 2007)
VIII/92 : The FIRST Survey Catalog, Version 2014Mar04 (Becker+ 2014)
II/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- IFRS [1/1317] Sequential number (IFRS_ID)
6- 10 A5 --- --- [FIRST]
12- 27 A16 --- FIRST FIRST source designation (JHHMMSS.s+DDMMSS)
29- 38 F10.6 deg RAdeg Right ascension (J2000) of the FIRST source
matched to the NVSS source (RA)
40- 49 F10.6 deg DEdeg Declination (J2000) of the FIRST source
matched to the NVSS source (DEC)
51 I1 --- Nc Number of FIRST components within 30" of the
corresponding NVSS source
53- 56 A4 --- --- [NVSS]
58- 71 A14 --- NVSS NVSS source designation (JHHMMSS+DDMMSS)
73- 78 F6.2 mJy S20cm NVSS 20cm integrated Stokes I flux density
(S_20cm)
80- 84 F5.2 mJy e_S20cm NVSS 1-σ error in S20cm (dS_20cm)
86- 89 A4 --- --- [WISE]
91-109 A19 --- WISE WISE source designation (JHHMMSS.ss+DDMMSS.s)
111-114 F4.2 arcsec dFW Separation between FIRST and WISE positions
(WISE_Separation)
116-120 F5.2 uJy S3.4 WISE 3.4um aperture and colour corrected flux
density (S_34um) (1)
122 A1 --- l_S4.6 [<] Limit flag on S4.6
123-128 F6.2 uJy S4.6 ?=- WISE 4.6um aperture and colour corrected
flux density (S_46um) (1)
130 A1 --- l_S12 [<] Limit flag on S12
131-134 I4 uJy S12 ?=- WISE 12um aperture and colour corrected
flux density (S_12um) (1)
136 A1 --- l_S22 [<] Limit flag on S22
137-141 I5 uJy S22 ?=- WISE 22um aperture and colour corrected
flux density (S_22um) (1)
143-147 I5 --- Ratio ?=- 20cm/3.4um flux density ratio (ratio)
149 A1 --- C/R [CR] Compactness of the FIRST source as
log(Sint/Speak) (Compact/Resolved) (2)
151 I1 --- M [0/2] Source morphology, 0=unresolved (3)
153-157 F5.2 % pol ?=- Bias-corrected fractional polarization
from Taylor et al. 2009 (J/ApJ/702/1230)
(POL_FRAC)
159-163 F5.1 rad/m2 RM ?=- Bias-corrected rotation measure from
Taylor et al. 2009 (J/ApJ/702/1230)
165-168 F4.1 rad/m2 e_RM ?=- 1-σ error in the bias-corrected
rotation measure from Taylor et al. 2009
(J/ApJ/702/1230) (dRM)
170-176 I7 ---- KI2014 Unique catalogue row identifier from the
Kimball & Ivezic (2014) unified radio
catalog [1401.1535] (UNIQ_ID)
178-179 A2 --- --- [WN]
181-193 A13 --- WENSS WENSS IAU source designation (BHHMM.m+DDMM)
(WENSS_NAME) (4)
195 A1 --- l_S92cm [<] Limit flag on S92cm
196-199 I4 mJy S92cm ?=- WENSS 92cm integrated Stokes I flux
density (S_92cm)
201-203 A3 --- n_ID6cm [GB6 PMN] Source of ID6cm designation
(GB6 or PMN)
205-214 A10 --- ID6cm GB6/PMN IAU source designation (JHHMM+DDMM)
(GB6PMNNAME) (5)
216 A1 --- l_S6cm [<] Limit flag on S6cm
217-219 I3 mJy S6cm ?=- GB6 or PMN 6cm Stokes I peak flux density
(mJy/beam) from Gregory et al. 1996 (VIII/40)
or Griffith et al. 1995 (VIII/38) (S_6cm)
221-224 I4 mJy S4m ?=- VLSS 4m Stokes I peak flux density from
Lane et al. 2008 (mJy/beam) (VIII/79) (S_4m)
226-230 F5.2 --- SI3 ?=- Radio spectral index α3 between
the 92, 20 and 6cm flux densities
(excluding PMN sources) (alpha_3)
232-236 F5.2 --- SI1 ?=- Radio spectral index between the
92 and 20cm flux densities (alpha9220)
238-242 F5.2 --- SI2 ?=- Radio spectral index between the
20 and 6cm flux densities
(excluding PMN sources) (alpha206)
244-257 A14 --- Shape Shape of the radio spectra (RadioSpectra) (6)
259-277 I19 --- SDSSobjID ?=- SDSS DR9 unique object ID (SDSS_objID)
279-283 F5.2 mag umag ?=- SDSS DR9 u band magnitude (modelMag_u)
285-289 F5.2 mag gmag ?=- SDSS DR9 g band magnitude (modelMag_g)
291-295 F5.2 mag rmag ?=- SDSS DR9 r band magnitude (modelMag_r)
297-301 F5.2 mag imag ?=- SDSS DR9 i band magnitude (modelMag_i)
303-307 F5.2 mag zmag ?=- SDSS DR9 z band magnitude (modelMag_z)
309-327 I19 --- specObjID ?=- SDSS DR9 unique spectroscopic object ID
329-336 F8.6 --- z ?=- SDSS DR9 spectroscopic redshift
338-363 A26 ---- Spitzer Unique Spitzer source designation
(Spitzer_designation) (7)
365-369 F5.2 uJy S3.6 ?=- Spitzer 3.6um flux density (S_36um)
371-378 F8.6 --- zNED ?=- NASA/IPAC Extragalactic Database (NED)
catalogued spectroscopic or photometric
redshift (Redshift)
380-383 A4 --- q_zNED Quality of the redshift from NED:
SPEC=spectroscopic, PHOT=photometric (z_Qual)
385 A1 --- r_zNED Redshift reference from NED (z_Ref) (8)
387-394 A8 --- Field Deep survey field (Survey_Field) (9)
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Note (1): to convert from MAGNITUDES to FLUX:
flux(jy) = F0(ib).10(-0.4mag) where
F0(ib) = 306.682, 170.663, 29.0448 and 8.2839, respectively at
3.4, 4.6, 12 and 22um.
Note (2): Flag assigned as:
C = compact source (log(Sint/Speak) < 0.05)
R = resolved source (log(Sint/Speak) > 0.05)
Note (3): Morphology is:
0 = unresolved
1 = double-lobed
2 = resolved but uncertain/complex
Note (4): Note that some WENSS sources have a designation but no flux density
since it was considered unreliable - see section 3.3.
Note (5): Note that some GB6/PMN sources have a designation but no peak flux
density since it was considered unreliable - see section 3.3.
Note (6): Shapes are:
GPS = Gigahertz-Peaked Spectrum
CSS = Compact Steep Spectrum
USS = Ultra Steep Spectrum
SS = Steep Spectrum
Note (7): Unique Spitzer source designation can be
SWIRE2_JHHMMSS.ss+DDMMSS.s, SSTSLP JHHMMSS.ss+DDMMSS.s,
SDWFS_JHHMMSS+DDMMSS or FLSRJHHMMSS.s+DDMMSS
Note (8): References as follows:
A = Verkhodanov et al. (2002ARep...46..531V 2002ARep...46..531V, Cat. J/AZh/79/589)
B = Richards et al. (2004ApJS..155..257R 2004ApJS..155..257R, Cat. J/ApJS/155/257)
C = Abazajian et al. (2004AJ....128..502A 2004AJ....128..502A)
D = Abazajian et al. (2005AJ....129.1755A 2005AJ....129.1755A, Cat. II/259)
E = Hsieh et al. (2005ApJS..158..161H 2005ApJS..158..161H, cat. J/AJ/158/161)
F = Adelman-McCarthy et al. (2006ApJS..162...38A 2006ApJS..162...38A, Cat. II/267)
G = Tinti & de Zotti (2006A&A...445..889T 2006A&A...445..889T)
H = Schmidt et al. (2006ApJ...649...63S 2006ApJ...649...63S, Cat. J/ApJ/649/63)
I = Rowan-Robinson et al. (2008MNRAS.386..697R 2008MNRAS.386..697R, Cat. II/290)
J = El Bouchefry (2009MNRAS.396.2011E 2009MNRAS.396.2011E, Cat. J/MNRAS/396/2011)
Note (9): Deep survey field approximate boundaries boundaries the source
falls within, among: Stripe82, XMM-LSS, ELAIS-N1, ELAIS-N2, AEGIS, Bootes1,
VLA-FLS.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 11-Dec-2014