J/MNRAS/515/2032 LoTSS Bootes Deep Field Giant Radio Galaxies (Simonte+, 2022)
Giant radio galaxies in the LoTSS Bootes Deep Field.
Simonte M., Andernach H., Brueggen M., Schwarz D.J., Prandoni I.,
Willis A.G.
<Mon. Not. R. Astron. Soc. 515, 2032-2052 (2022)>
=2022MNRAS.515.2032S 2022MNRAS.515.2032S (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; QSOs ; Radio sources ; Galaxies, radio
Keywords: galaxies: active - radio sources: radio galaxies -
radio continuum: galaxies
Abstract:
Giant radio galaxies (GRGs) are radio galaxies that have projected
linear extents of more than 700 kpc or 1 Mpc, depending on definition.
We have carried out a careful visual inspection in search of GRGs of
the Bootes LOFAR Deep Field (BLDF) image at 150 MHz. We identified 74
GRGs with a projected size larger than 0.7 Mpc of which 38 are larger
than 1 Mpc. The resulting GRG sky density is about 2.8 (1.43) GRGs per
square degree for GRGs with linear size larger than 0.7 (1) Mpc. We
studied their radio properties and the accretion state of the host
galaxies using deep optical and infrared survey data and determined
flux densities for these GRGs from available survey images at both
54 MHz and 1.4 GHz to obtain integrated radio spectral indices. We
show the location of the GRGs in the P-D diagram. The accretion mode
onto the central black holes of the GRG hosts is radiatively
inefficient suggesting that the central engines are not undergoing
massive accretion at the time of the emission. Interestingly, 14 out
of 35 GRGs for which optical spectra are available show a moderate
star formation rate (10-100 M☉/yr). Based on the number density
of optical galaxies taken from the DESI DR9 photometric redshift
catalogue, we found no significant differences between the
environments of GRGs and other radio galaxies, at least for redshift
up to z=0.7.
Description:
We report radio and optical parameters of 74 giant radio sources (GRS)
with projected linear sizes larger than 0.7 Mpc in the Bootes LOFAR
Two-metre Sky Survey (LoTSS) Deep Field (BLDF), a circular area of
26.5 deg2, imaged with 6-arcsec resolution at 144 MHz, centered at
RA,DEC= 14:31:23,+34:27:23 (J2000), with central rms noise level of
0.03 mJy/beam. We provide host name and position, optical/IR
magnitude, spectroscopic or photometric redshift, angular and linear
radio size, Fanaroff-Riley (FR) type, total 144 MHz flux and radio
spectral power, as well as a 3-point radio spectral index where
available.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 143 74 Radio and Optical data for 74 Giant Radio Galaxies
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See also:
II/328 : AllWISE Data Release (Cutri+ 2013)
II/365 : The CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
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- 11 A11 --- JName GRS object designation, JHHMM+DDMMA (1)
12- 16 A5 --- origin Survey in which the GRS was seen first (2)
18- 25 F8.4 deg RAdeg Right ascension (J2000) of GRS host
27- 33 F7.4 deg DEdeg Declination (J2000) of GRS host
36- 38 F3.1 arcmin LAS Largest projected angular size of GRS
41- 44 A4 --- FRtype Fanaroff-Riley radio morphological type
46- 50 F5.3 --- z Redshift of the host
52- 56 F5.3 --- e_z ? rms uncertainty of the redshift
57 A1 --- ztype [spe] type of redshift: s = spectroscopic,
p = photometric, e = estimated by us
59- 68 A10 --- r_z References used for redshifts (3)
70- 95 A26 --- Host Name of the GRS host object
97- 98 A2 --- Class Type of host of the GRS (4)
100-103 F4.2 Mpc LLS Largest projected linear size (5)
105-109 F5.2 mag magapp Apparent magnitude of host
111-112 A2 --- Filter [r W1 W2] Filter, r = rmag from DES;
W1/2 from AllWISE (Cat. II/328) or
CatWISE2020 (2021ApJS..253....8M 2021ApJS..253....8M,
Cat. II/365/)
114-119 F6.1 mJy S150 Integrated 150-MHz flux density (6)
121 A1 --- f_S150 [*] * if integration area includes emission
below 3 sigma rms
122-126 F5.1 mJy e_S150 rms uncertainty of integrated 150-MHz flux
129-132 F4.1 W/Hz logP150 Decimal log of 150-MHz spectral power (5)
134 A1 --- l_alpha [>] Lower-limit flag on spectral index
135-138 F4.2 --- alpha ? Radio spectral index (7)
140-143 F4.2 --- e_alpha ? rms uncertainty of radio spectral index
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Note (1): in the format JHHMM+DDMM (truncated J2000 host coordinates); a "C"
in byte 11 indicates that the object is a candidate, due to either uncertain
radio size, redshift or optical host identification or a combination thereof.
Note (2): reference codes are as follows:
1 = Coppejans et al., 2015MNRAS.450.1477C 2015MNRAS.450.1477C, Cat. J/MNRAS/450/1477
2 = Williams et al., 2016MNRAS.460.2385W 2016MNRAS.460.2385W, Cat. J/MNRAS/460/2385
3 = van Weeren et al., 2014ApJ...793...82V 2014ApJ...793...82V, Cat. J/ApJ/793/82
4 = Kuzmicz & Jamrozy, 2021ApJS..253...25K 2021ApJS..253...25K, Cat. J/ApJS/253/25
5 = Williams et al., 2013A&A...549A..55W 2013A&A...549A..55W, Cat. J/A+A/549/A55
6 = Mingo et al., 2022MNRAS.511.3250M 2022MNRAS.511.3250M
7 = Masini et al., 2021A&A...650A..51M 2021A&A...650A..51M
Note (3): references are coded with the following numbers:
1 = Zou et al., 2019ApJS..245....4Z 2019ApJS..245....4Z; Zhou et al., 2021MNRAS.501.3309Z 2021MNRAS.501.3309Z
(DESI)
2 = Duncan et al., 2021A&A...648A...4D 2021A&A...648A...4D, Cat. J/A+A/648/A4
3 = Alam et al., 2015ApJS..219...12A 2015ApJS..219...12A, Cat. V/147 (SDSS spectrum);
Beck et al., 2016MNRAS.460.1371B 2016MNRAS.460.1371B (SDSS photometric z)
4 = Beck et al., 2021MNRAS.500.1633B 2021MNRAS.500.1633B (2021, Pan-STARRS)
5 = Chung et al., 2014ApJ...790...54C 2014ApJ...790...54C , Cat. J/ApJ/790/54
6 = Bilicki et al., 2016ApJS..225....5B 2016ApJS..225....5B
7 = Brescia et al., 2014A&A...568A.126B 2014A&A...568A.126B, Cat. J/A+A/568/A126
8 = Luo et al., 2015RAA....15.1095L 2015RAA....15.1095L, Cat. V/146 (LAMOST)
9 = Huchra et al., 2012ApJS..199...26H 2012ApJS..199...26H, Cat. J/ApJS/199/26 (2MASX)
10 = Kochanek et al., 2012ApJS..200....8K 2012ApJS..200....8K, Cat. J/ApJS/200/8, note that all
reference codes listed as 11 in the published paper should read 10.
Note (4): Type of host of the GRS as follows:
G = galaxy
Q = quasar
Qc = quasar candidate
? = too faint to classify
Note (5): based on H0 = 70 km/s/Mpc, Omegam = 0.3, OmegaLambda = 0.7.
Note (6): integrated on the full resolution 6 arcsec image over areas exceeding
3 sigma rms
Note (7): defined as flux ∝ {freq}{-alpha}.
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Acknowledgements:
Heinz Andernach, heinz(at)ugto.mx
References:
Tasse et al., 2021A&A...648A...1T 2021A&A...648A...1T, The LoTSS Deep Fields Data Release 1. I.
(End) Heinz Andernach [Univ. Guanajuato], Patricia Vannier [CDS] 09-Aug-2022