J/A+A/638/A46 The XXL Survey. XLI. GMRT XXL-N 610MHz (Slaus+, 2020)
The XXL Survey: XLI.
Radio AGN luminosity functions based on the GMRT 610 MHz continuum observations.
Slaus B., Smolcic V., Novak M., Fotopoulou S., Ciliegi P., Jurlin N.,
Ceraj L., Tisanic K., Birkinshaw M., Bremer M., Chiappetti L., Horellou C.,
Huynh M., Intema H., Kolokythas K., Pierre M., Raychaudhury S.,
Rottgering H.
<Astron. Astrophys. 638, A46 (2020)>
=2020A&A...638A..46S 2020A&A...638A..46S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, radio; Positional data; Radio continuum; Radio sources
Keywords: galaxies: nuclei - radio continuum: galaxies - accretion -
accretion: disks - galaxies: evolution - galaxies: active
Abstract:
We study the space density evolution of active galactic nuclei (AGN)
using the 610MHz radio survey of the XXL-North field, performed with
the Giant Metrewave Radio Telescope (GMRT). The survey covers an area
of 30.4deg2, with a beamsize of 6.5arcsec. The survey is divided
into two parts, one covering an area of 11.9deg2 with 1σ rms
noise of 200uJy/beam and the other spanning 18.5deg2 with rms noise
of 45uJy/beam. We extracted the catalog of radio components above 7.
The catalog was cross-matched with a multi-wavelength catalog of the
XXL-North field (covering about 80% of the radio XXL-North field)
using a likelihood ratio method, which determines the counterparts
based on their positions and their optical properties. The
multi-component sources were matched visually with the aid of a
computer code: Multi-Catalog Visual Cross-Matching (MCVCM). A flux
density cut above 1mJy selects AGN hosts with a high purity in terms
of star formation contamination based on the available source counts.
After crossmatching and elimination of observational biases arising
from survey incompleteness, the number of remaining sources was
1150. We constructed the rest-frame 1.4GHz radio luminosity functions
of these sources using the maximum volume method. This survey allows
us to probe luminosities of 23≲log(L1.4GHz[W/Hz])≲28 up to redshifts
of z~=2.1. Our results are consistent with the results from the
literature in which AGN are comprised of two differently evolving
populations, where the high luminosity end of the luminosity functions
evolves more strongly than the low-luminosity end.
Description:
We present the XXLGMRT17_ctpt catalog, drawn and supplementing the
XXLGMRT17 catalog. This catalog is the result of a cross-correlation
process with a multi-wavelength catalogue of the same field by
Fotopoulou in prep. All of the counterpart sources were required to
have an IRAC 3.6um detection in order to obtain a counterpart
catalogue of uniform depth and density. The cross-correlation was
performed via Likelihood Ratio method by Sutherland & Saunders,
(1992MNRAS.259..413S 1992MNRAS.259..413S) and as described in Slaus et al. (this paper).
We decided to use a threshold of 0.2 for the Likelihood Ratio value.
Multi component sources were matched visually using the MCVCM code
(https://github.com/kasekun/MCVCM).
More details about the full XXLGMRT17 catalog, including its
verification, reliability, and false detection rate can be found in
Smolcic et al. (2018A&A...620A..14S 2018A&A...620A..14S, paper XXIX).
More details about the cross-correlation process can be found in the
paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gmrtctpt.dat 164 3335 GMRT XXL-N 610 MHz counterpart catalogue
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See also:
IX/49 : XXL Survey: First results (Pierre+, 2016)
IX/52 : XXL Survey. DR2 (Chiappetti+, 2018)
Byte-by-byte Description of file: gmrtctpt.dat
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Bytes Format Units Label Explanations
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1- 25 A25 --- Name Source name
27- 30 I4 --- Id ?=-99 Source numeric identifier (1)
32- 41 F10.6 deg RAdeg ?=-99.99 Right ascension (J2000)
43- 52 F10.6 deg DEdeg ?=-99.99 Declination (J2000)
54- 61 F8.4 arcsec e_RAdeg ?=-99.99 Positional error on RA
63- 70 F8.4 arcsec e_DEdeg ?=-99.99 Positional error on DEC
72- 81 F10.6 Jy/beam Speak ?=-99.99 Peak flux density at 610MHz
83- 92 F10.6 Jy/beam rms ?=-99.99 Local rms value
94-101 F8.6 Jy Stotal Total flux density at 610MHz
103-112 F10.6 Jy e_Stotal ?=-99.99 Error on total flux density
115-120 F6.2 --- alpha ?=-99.99 610MHz to 1.4GHz spectral index
122-131 F10.6 deg RAIdeg Right ascension of IRAC counterpart
133-142 F10.6 deg DEIdeg Declination of IRAC counterpart
144-149 F6.4 --- zph photometric redshift
151-158 F8.2 --- LR ?=-99.99 Likelihood ratio of the counterpart
160 I1 --- AreaFlag [0/1] Area flag (inner/outer) (2)
162 I1 --- EdgeFlag [0/1] Edge flag (3)
164 I1 --- NewFlag [0/2] New source flag (4)
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Note (1): Undefined for sources added with respect to the original catalogue
(Smolcic et al., 2018A&A...620A..14S 2018A&A...620A..14S, paper XXIX, Cat. IX/52/xxl_gmrt.dat).
Note (2): Area flag as follows:
0 = Source is in the inner mosaic (within XMM-LSS and higher rms)
1 = Source is in the outer mosaic (see Smolcic et al., 2018A&A...620A..14S 2018A&A...620A..14S,
paper XXIX, for details)
Note (3): Edge flag as follows:
0 = Source is on edge where noise is high
1 = otherwise (see Smolcic et al., 2018A&A...620A..14S 2018A&A...620A..14S, paper XXIX,
for details)
Note (4): New flag as follows:
0 = source present in original XXLGMRT17 catalogue
(Smolcic et al. 2018A&A...620A..14S 2018A&A...620A..14S, paper XXIX, Cat. IX/52/xxl_gmrt.dat)
1 = source altogether new as described in section 2.2 of the paper.
For these sources all radio information but the total flux are
undefined. The catalog name is built from IRAC position.
2 = source new as above but the catalogue name is identical to a source in the
original XXLGMRT17 catalogue (IX/52/xxl_gmrt.dat), whose Id is given.
All remaining radio information but the total flux is undefined.
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Acknowledgements:
Buno Slaus, bslaus(at)phy.hr,
Lucio Chiappetti, lucio(at)lambrate.inaf.it
References:
XXL DR1, Cat. IX/49
Pierre et al., Paper I 2016A&A...592A...1P 2016A&A...592A...1P
Pacaud et al., Paper II 2016A&A...592A...2P 2016A&A...592A...2P
Giles et al., Paper III 2016A&A...592A...3G 2016A&A...592A...3G
Lieu et al., Paper IV 2016A&A...592A...4L 2016A&A...592A...4L
Mantz et al. Paper V 2014ApJ...794..157M 2014ApJ...794..157M
Fotopoulou et al., Paper VI 2016A&A...592A...5F 2016A&A...592A...5F
Pompei et al., Paper VII 2016A&A...592A...6P 2016A&A...592A...6P
Adami et al., Paper VIII 2016A&A...592A...7A 2016A&A...592A...7A
Baran et al., Paper IX 2016A&A...592A...8B 2016A&A...592A...8B
Ziparo et al., Paper X 2016A&A...592A...9Z 2016A&A...592A...9Z
Smolic et al., Paper XI 2016A&A...592A..10S 2016A&A...592A..10S
Koulouridis et al., Paper XII 2016A&A...592A..11K 2016A&A...592A..11K
Eckert et al., Paper XIII 2016A&A...592A..12E 2016A&A...592A..12E
Lidman et al., Paper XIV 2016PASA...33....1L 2016PASA...33....1L
Lavoie et al., Paper XV 2016MNRAS.462.4141L 2016MNRAS.462.4141L
XXL DR2, Cat. IX/52
Marulli et al., Paper XVI 2018A&A...620A...1M 2018A&A...620A...1M
Mantz et al., Paper XVII 2018A&A...620A...2M 2018A&A...620A...2M
Butler et al., Paper XVIII 2018A&A...620A...3B 2018A&A...620A...3B
Koulouridis et al., Paper XIX 2018A&A...620A...4K 2018A&A...620A...4K
Adami et al., Paper XX 2018A&A...620A...5A 2018A&A...620A...5A
Melnyk et al., Paper XXI 2018A&A...620A...6M 2018A&A...620A...6M
Guglielmo et al., Paper XXII 2018A&A...620A...7G 2018A&A...620A...7G
Farahi et al., Paper XXIII 2018A&A...620A...8F 2018A&A...620A...8F
Faccioli et al., Paper XXIV 2018A&A...620A...9F 2018A&A...620A...9F
Pacaud et al., Paper XXV 2018A&A...620A..10P 2018A&A...620A..10P
Ciliegi et al., Paper XXVI 2018A&A...620A..11C 2018A&A...620A..11C
Chiappetti et al., Paper XXVII 2018A&A...620A..12C 2018A&A...620A..12C
Ricci et al., Paper XXVIII 2018A&A...620A..13R 2018A&A...620A..13R
Smolcic et al., Paper XXIX 2018A&A...620A..14S 2018A&A...620A..14S
Guglielmo et al., Paper XXX 2018A&A...620A..15G 2018A&A...620A..15G
Butler et al., Paper XXXI 2018A&A...620A..16B 2018A&A...620A..16B
Plionis et al., Paper XXXII 2018A&A...620A..17P 2018A&A...620A..17P
Logan et al., Paper XXXIII 2018A&A...620A..18L 2018A&A...620A..18L
Horellou et al., Paper XXXIV 2018A&A...620A..19H 2018A&A...620A..19H
Koulouridis et al., Paper XXXV 2018A&A...620A..20K 2018A&A...620A..20K
Butler et al., Paper XXXVI 2019A&A...625A.111B 2019A&A...625A.111B
Guglielmo et al., Paper XXXVII 2019A&A...625A.112G 2019A&A...625A.112G
Sereno et al., Paper XXXVIII 2019A&A...632A..54S 2019A&A...632A..54S
(End) Buno Slaus [Univ. Zagreb], Patricia Vannier [CDS] 20-Feb-2020