J/A+A/686/A21 Giant radio galaxies in the LOFAR deep fields (Simonte+, 2024)
Giant radio galaxies in the LOFAR deep fields.
Simonte M., Andernach H., Brueggen M., Miley G.K., Barthel P.
<Astron. Astrophys. 686, A21 (2024)>
=2024A&A...686A..21S 2024A&A...686A..21S (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; QSOs ; Radio sources ; Galaxies, radio
Keywords: galaxies: active - galaxies: jets
Abstract:
From visual inspection of the three LOw-Frequency ARray (LOFAR) deep
fields, namely the Bootes, ELAIS-N1, Lockman Hole, covering a total
area of 95 deg2, we compile a list of 1609 radio galaxies (RGs) with
a projected angular size larger than about 30 arcsec. We present their
host galaxies with either spectroscopic (when available) or else
photometric redshift estimates culled from various different
references, and use these to estimate their projected linear sizes. We
compare the radio, optical properties of GRGs with those of a control
sample of smaller RGs, and explored their environment in terms of the
surface number density of neighbouring galaxies within these surveys.
Integrated flux densities and radio luminosities were determined for a
subset of RGs through available survey images at 50, 150, 610, and
1400 MHz to compute integrated spectral indices. We find that GRGs
preferentially reside in sparser environments compared to their
smaller counterparts. Only 3.6% of the GRGs reside within a 3D
comoving distance of 5 Mpc from a previously reported galaxy cluster,
and that larger sources exhibit steeper integrated spectral indices,
suggesting that GRGs are late-stage versions of RGs.
Description:
We report radio and optical parameters of 1609 radio sources with
projected angular sizes larger than about 30 arcsec in the Bootes,
ELAIS-N1, Lockman Hole Two-metre Sky Survey (LoTSS) Deep Fields,
covering a total area of 95 deg^2, imaged with 6-arcsec resolution at
144 MHz, and with rms noise levels of 0.03 mJy/beam in the central
10 deg2 of each field. We provide host position, name and type,
optical or IR magnitude, spectroscopic or photometric redshift,
angular and linear radio size, Fanaroff-Riley (FR) type for the radio
morphology, and integrated radio flux densities and luminosities for
most of the GRGs. Projected linear sizes range from 0.03 to 4.45 Mpc,
with 134 sources larger than 1 Mpc and an additional 147 larger than
0.7 Mpc, making a total of 281 giant radio galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 185 1609 Radio and optical data for
1609 Extended Radio Galaxies (ERG)
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See also:
II/328 : AllWISE Data Release (Cutri+ 2013)
II/365 : CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
VII/292 : DESI Legacy Imaging Surveys DR8 (Duncan, 2022)
J/MNRAS/515/2032 : LoTSS Bootes Deep Field Giant Radio Galaxies
(Simonte+, 2022)
J/A+A/672/A178 : Radio galaxy alignment in ELAIS-N1 (Simonte+, 2023)
J/A+A/648/A2 : LoTSS Deep Fields DR1 ELAIS-N1 deep field (Sabater+, 2021)
J/A+A/648/A3 : LoTSS Deep Fields DR1 ELAIS-N1 & Lockman Hole
(Kondapally+ 2021)
J/A+A/648/A4 : LoTSS Deep Fields DR1 photometric redshifts (Duncan+, 2021)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Field [LEB] Name of LoTSS Deep Field:
L=Lockman Hole, E=ELAIS-N1, B=Bootes
3- 13 A11 --- JName ERG object designation, JHHMM+DDMMa (1)
15 A1 --- cflag [C-] C if considered a candidate
17- 24 F8.4 deg RAdeg Right ascension (J2000) of ERG host
26- 32 F7.4 deg DEdeg Declination (J2000) of ERG host
34- 38 F5.2 arcmin LAS Largest projected angular size of ERG
40- 45 A6 --- FRtype Fanaroff-Riley radio morphological type (2)
47- 52 F6.4 --- z Redshift adopted for the host
54- 57 F4.2 --- e_z ?=- Uncertainty of the redshift
59 A1 --- ztype [spe] Type of redshift (4)
61- 80 A20 --- zrefs References for redshift (3)
82- 85 F4.2 Mpc LLS Largest projected linear size (5)
87-112 A26 --- Host Name of the ERG host object
114-115 A2 --- Class Type of host of the ERG (6)
117-121 F5.2 mag mag ?=- Apparent magnitude of host in filter
123-124 A2 --- Filter r' and r are rmag from SDSS and DES(I),
iK is Kron imag from Pan-STARRS,
W1/2 from AllWISE or CatWISE2020
126-132 F7.2 mJy S144 ?=- Total flux at 144 MHz from LOFAR
134-139 F6.2 mJy e_S144 ?=- Error in total flux at 144 MHz from LOFAR
141-145 F5.2 [W/Hz] logP144 ?=- Decimal log of 144-MHz spectral power (5)
147-150 F4.2 --- corefrac ?=- Ratio of core to total flux at 144 MHz
152-156 F5.2 --- alphHI ?=- Integrated spectral index for 144-1400 MHz
158-161 F4.2 --- e_alphHI ?=- 1-sigma error in alphHI
163-167 F5.2 --- alphLO ?=- Integrated spectral index for 50-144 MHz
169-172 F4.2 --- e_alphLO ?=- 1-sigma error in alphLO
174-178 F5.2 --- alphMID ?=- Integrated spectral index for 144-610 MHz
180-183 F4.2 --- e_alphMID ?=- 1-sigma error in alphMID
185 A1 --- prevPub [PN] P = previously published in either
2022MNRAS.515.2032S 2022MNRAS.515.2032S or 2023A&A...672A.178S 2023A&A...672A.178S,
N = new in the present paper
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Note (1): the name JHHMM+DDMM is created from truncated J2000 host coordinates.
Letters a and b are attached to it if their hosts lie close to each other.
Note (2): whenever the source shows feature of both FR I and FR II type,
we assign I/II and cpx for source too complex to assign an FR type
Note (3): spectroscopic or photometric redshifts were taken from the following
references:
1 = Ahumada et al., 2020ApJS..249....3A 2020ApJS..249....3A (SDSS DR16, z_spec, or else
a z_phot from SDSS based on Beck et al. 2016MNRAS.460.1371B 2016MNRAS.460.1371B, Cat. V/154)
2 = Beck et al., 2021MNRAS.500.1633B 2021MNRAS.500.1633B (Pan-STARRS, z_phot)
3 = Zou et al., 2022RAA....22f5001Z 2022RAA....22f5001Z (DESI DR9, z_phot)
4 = Rowan-Robinson et al., 2013MNRAS.428.1958R 2013MNRAS.428.1958R (SWIRE, z_phot, Cat. II/326)
5 = Xu et al., 2020ApJ...905..103X 2020ApJ...905..103X (HSC-SSP, z_phot, Cat. J/ApJ/905/103)
6 = Bilicki et al., 2016ApJS..225....5B 2016ApJS..225....5B (AllWISE, z_phot)
7 = Wen & Han, 2021MNRAS.500.1003W 2021MNRAS.500.1003W
(HSC-SSP/unWISE, z_phot, Cat. J/MNRAS/500/1003)
8 = Brescia et al., 2014A&A...568A.126B 2014A&A...568A.126B (SDSS-DR9, z_phot)
9 = Duncan et al., 2021A&A...648A...4D 2021A&A...648A...4D
(LoTSS Deep Fields, z_phot, Cat. J/A+A/648/A4)
10 = Zhou et al., 2021MNRAS.501.3309Z 2021MNRAS.501.3309Z (DESI-LS9, z_phot, NOIRlab)
11 = Duncan et al., 2022MNRAS.512.3662D 2022MNRAS.512.3662D (DESI-LS8, z_phot, Cat. VII/292)
12 = Li et al., 2022MNRAS.509.2289L 2022MNRAS.509.2289L (BASS DR3 quasars)
13 = DESI Collaboration, 2023, (DESI EDR, z_spec, arXiv:2306.06308)
14 = Wegner et al., 2003AJ....126.2268W 2003AJ....126.2268W (z_spec, Cat. J/AJ/126/2268)
15 = Paris et al., 2018A&A...613A..51P 2018A&A...613A..51P (SDSS DR14Q, z_spec, Cat. VII/286)
16 = Lacy et al., 2013ApJS..208...24L 2013ApJS..208...24L
(Spitzer MIR AGN, z_spec, Cat. J/ApJS/208/24)
17 = Luo et al., 2019, (LAMOST DR7, z_spec, Cat. V/156)
18 = Kirshner et al., 1987ApJ...314..493K 1987ApJ...314..493K
(Bootes Void, z_spec, Cat. J/ApJ/314/493)
19 = Kochanek et al., 2012ApJS..200....8K 2012ApJS..200....8K (AGES, z_spec, Cat. J/ApJS/200/8)
20 = Trouille et al., 2008ApJS..179....1T 2008ApJS..179....1T (OPTX, z_spec, Cat. J/ApJS/179/1)
21 = Wu & Shen, 2022ApJS..263...42W 2022ApJS..263...42W (SDSS DR16Q, z_spec)
22 = Liu et al., 2022ApJS..261...24L 2022ApJS..261...24L (HETDEX, z_spec, Cat. J/ApJS/261/24/)
Note (4): Type of redshift as follows:
s = spectroscopic; p = photometric; e = estimated by us
Note (5): based on H0=70 km/s/Mpc, Omegam=0.3, OmegaLambda=0.7
Note (6): Type of host of the ERG as follows:
G = galaxy
Q = quasar
Qc = quasar candidate
? = too faint to classify
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Acknowledgements:
Heinz Andernach, heinz(at)ugto.mx
(End) Heinz Andernach [Univ. Guanajuato], Patricia Vannier [CDS] 12-Apr-2024