J/ApJS/253/25 Giant radio quasars from SDSS, FIRST & NVSS (Kuzmicz+, 2021)
Giant radio quasars: sample and basic properties.
Kuzmicz A., Jamrozy M.
<Astrophys. J. Suppl. Ser., 253, 25 (2021)>
=2021ApJS..253...25K 2021ApJS..253...25K
ADC_Keywords: QSOs; Radio sources; Redshifts; Optical
Keywords: Active galaxies ; Active galactic nuclei ; Giant radio galaxies
Abstract:
We present the largest sample of giant radio quasars (GRQs), which are
defined as having a projected linear size greater than 0.7Mpc. The
sample consists of 272 GRQs, of which 174 are new objects discovered
through cross-matching the NRAO Very Large Array Sky Survey and the
Sloan Digital Sky Survey 14th Data Release Quasar Catalog (DR14Q) and
confirmed using Faint Images of the Radio Sky at Twenty-Centimeters
(FIRST) radio maps. In our analysis we compare the GRQs with 367
smaller, lobe-dominated radio quasars found using our search method,
as well as with quasars from the SDSS DR14Q, investigating the
parameters characterizing their radio emission (i.e., total and core
radio luminosity, radio core prominence), optical properties (black
hole masses, accretion rates, distribution in Eigenvector 1 plane) and
infrared colors. For the GRQs and smaller radio quasars we find a
strong correlation between [OIII] luminosity and radio luminosity at
1.4GHz, indicating a strong connection between radio emission and
conditions in the narrow-line region. We spot no significant
differences between GRQs and smaller radio quasars, however we show
that most extended radio quasars belong to a quasar population of
evolved active galactic nuclei with large black hole masses and low
accretion rates. We also show that GRQs have bluer W2-W3 colors
compared to SDSS quasars with FIRST detections, indicating differences
in the structure of the dusty torus.
Description:
For our analysis, we collected giant radio quasars (GRQs) known to
date, along with 174 new objects.
Sixty-nine GRQs out of all previously known GRQs were taken from the
literature compilation of GRSs by Kuzmicz+ (2018, J/ApJS/238/9). A
further 15 GRQs were taken from Dabhade+ (2020, J/A+A/635/A5), where
authors identified them on low-frequency radio images of the LOFAR
Two-metre Sky Survey (LoTSS) survey, and another 14 GRQs were taken
from Dabhade+ (2020, J/A+A/642/A153). The new GRQs studied in this
paper were found using the currently available data from the
NVSS (VIII/65), FIRST (VIII/92), and DR14Q (VII/286 ; superseded by
VII/289) catalogs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 174 174 newly discovered giant radio quasars (GRQs)
table2.dat 73 367 367 newly found GRQs with smaller-sized extended
radio quasars (SRQs)
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See also:
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
VII/286 : SDSS quasar catalog, fourteenth data release (Paris+, 2018)
II/363 : The band-merged unWISE Catalog (Schlafly+, 2019)
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
J/MNRAS/204/151 : Bright radio sources at 178 MHz (3CRR) (Laing+ 1983)
J/MNRAS/263/425 : Low-z BQS Quasars (Miller+, 1993)
J/AJ/121/2381 : UBRI photometry of radio galaxies (Brown+, 2001)
J/AJ/141/182 : Radio and optical properties of QSOs (Kimball+, 2011)
J/MNRAS/426/851 : Giant Radio Quasars properties (Kuzmicz+, 2012)
J/AJ/144/49 : Quasars from SDSS-DR7, WISE and UKIDSS surveys (Wu+, 2012)
J/ApJS/224/18 : Identify giant radio sources from the NVSS (Proctor, 2016)
J/MNRAS/466/921 : Radio properties of z < 0.3 quasars (Coziol+, 2017)
J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (Intema+, 2017)
J/MNRAS/471/3806 : Radio sources with recurrent jet (Kuzmicz+, 2017)
J/A+A/598/A104 : LOFAR Two-metre Sky Survey (Shimwell+, 2017)
J/A+A/608/A122 : Spectra of 28 intermediate redshift QSOs (Sulentic+, 2017)
J/ApJS/238/9 : Giant radio sources known to date (Kuzmicz+, 2018)
J/A+A/631/A46 : SDSS DR10 radio-loud quasars sample (Gaur+, 2019)
J/A+A/622/A1 : LOFAR Two-metre Sky Survey DR1 sources (Shimwell+, 2019)
J/A+A/642/A153 : SAGAN. I. Multi-wavelength studies (Dabhade+, 2020)
J/A+A/635/A5 : LoTSS giant radio galaxies. I. (Dabhade+, 2020)
J/ApJS/247/53 : ROGUE. I. SDSS gal. with FIRST (Koziel-Wierzbowska+, 2020)
J/ApJS/249/17 : SDSS QSO DR14 spectral properties (Rakshit+, 2020)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Identifier (JHHMM+DDMM)
12- 13 I2 h RAh Hour of Right Ascension (J2000)
15- 16 I2 min RAm Minute of Right Ascension (J2000)
18- 22 F5.2 s RAs Second of Right Ascension (J2000)
24- 24 A1 --- DE- Sign of the Declination (J2000)
25- 26 I2 deg DEd Degree of Declination (J2000)
28- 29 I2 arcmin DEm Arcminute of Declination (J2000)
31- 34 F4.1 arcsec DEs Arcsecond of Declination (J2000)
36- 41 F6.4 --- z [0.17/2.95] Redshift
43- 46 F4.2 arcmin LAS [0.3/5] Angular size (1)
48- 51 F4.2 Mpc D [0.1/2] Projected linear size (1)
53- 58 F6.3 --- fc [0/44]? Radio core prominence
60- 64 F5.2 W/Hz logPc [23.1/27.8]? Core radio luminosity at 1.4GHz
66- 70 F5.2 W/Hz logPt [24.4/28.1] Total radio luminosity at 1.4GHz
72- 74 A3 --- Flag Flag(s) (2)
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Note (1): As measured on FIRST maps as a distance between hot-spots.
Note (2): Flag as follows:
fn = angular size for radio sources with FIRST radio structure visible
only on the one side; measured between the FIRST hot-spot on the one
side and the maximum of NVSS emission on the other side;
nn = angular size for radio sources with no visible FIRST hot-spots;
measured between maxima of NVSS emission;
v = angular size for radio source with no visible FIRST hot-spots;
measured between hot-spots detected in VLASS;
s = the total radio luminosity is affected by a background radio source.
We subtracted 8mJy VLASS 3GHz contaminating source assuming the
spectral index α=-0.7;
c = candidate GRQ with uncertain radio morphology;
h = uncertain host position, the galaxy SDSS J142302.67+265014.9
located at redshift zphot=0.7 is also a possible host;
j = the quasars with visible one-sided radio jet (Section 2.4);
* = sources which can not be measured in FIRST and Very Large Array Sky
Survey (VLASS; Lacy+ 2020PASP..132c5001L 2020PASP..132c5001L) radio maps are measured to
the 3σ contour level in NVSS maps, therefore their sizes may be
overestimated.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-May-2021