J/other/Univ/8.587 Gamma-ray emitting jetted AGN (Foschini+, 2022)
A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei.
Foschini L., Lister M.L., Andernach H., Ciroi S., Marziani P., Anton S.,
Berton M., Dalla Bonta E., Jarvela E., Marcha M.J.M., Romano P.,
Tornikoski M., Vercellone S., Vietri A.
<Universe, 8, 587 (2022)>
=2022Univ....8..587F 2022Univ....8..587F (SIMBAD/NED BibCode)
ADC_Keywords: Gamma rays ; Active gal. nuclei ; Radio sources ; Surveys
Keywords: galaxies: active - gamma-ray sources - radio sources - redshifts
Abstract:
We considered the fourth catalog of gamma-ray point sources produced
by the Fermi Large Area Telescope (LAT) and selected only jetted
active galactic nuclei (AGN) or sources with no specific
classification, but with a low-frequency counterpart. Our final list
is composed of 2980 gamma-ray point sources. We then searched for
optical spectra in all the available literature and publicly available
databases, to measure redshifts and to confirm or change the original
LAT classification. Our final list of gamma-ray emitting jetted AGN is
composed of BL Lac Objects (40%), flat-spectrum radio quasars (23%),
misaligned AGN (2.8%), narrow-line Seyfert 1, Seyfert, and
low-ionization nuclear emission-line region galaxies (1.9%). We also
found a significant number of objects changing from one type to
another, and vice versa (changing-look AGN, 1.1%). About 30% of
gamma-ray sources still have an ambiguous classification or lack one
altogether.
Description:
From the 4FGL-DR2 gamma-ray source catalogue (2020ApJS..247...33A 2020ApJS..247...33A,
Cat. J/ApJS/247/33) we select extragalactic or unclassified
counterparts (excluding starburst and normal galaxies), and outside
the Galactic plane (|b|>10°). For 2980 gamma-ray sources we
searched for redshift measurements and optical spectra in the
literature. For those without spectroscopic redshifts we extract
photometric redshifts from 13 different references and provide their
average value. For 59 4FGL counterparts we provide revised counterpart
positions which differ from those of the 4FGL-DR2 catalogue by 0.3 to
215 arcsec.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 1585 2980 Counterparts and redshifts for 2980 gamma-ray
sources from the 4FGL-DR2 catalogue
notes.dat 107 2566 Individual notes (as in Notes column of catalog.dat)
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See also:
J/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- 4FGLname object designation from 4FGL-DR2
15- 42 A28 --- Counterpt Counterpart name from 4FGL-DR2
44- 51 F8.4 deg RAdeg Right Ascension (J2000) of counterpart (1)
53- 60 F8.4 deg DEdeg Declination (J2000) of counterpart (1)
62- 67 F6.1 arcsec Sep Separation of the counterpart from
that listed in 4FGL-DR2
69- 75 F7.5 --- z ?=- Redshift (2)
77 I1 --- f_z [0/3] flag for the redshift (3)
79- 101 A23 --- r_z references used for redshifts (4)
103- 107 A5 --- Class 4FGL-DR2 original classification (5)
108- 113 A6 --- RevCl Revised classification (6)
115-1585 A1471 --- Notes Notes on individual sources (7)
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Note (1): 60 objects have coordinates revised by us compared to the original
4FGL-DR2 counterpart positions whenever the Sep column is non-zero.
Note (2): redshift may be either spectroscopic or photometric according
to the zFlag and are given to a maximum of 3 significant digits
Note (3): redshift flags as follows:
0 = spectroscopic redshift (1461)
1 = non-spectroscopic redshift, e.g. photometric, imaging of the host
galaxy, cross-correlation with zero-velocity template, from nearby galaxies
in a cluster (1291)
2 = featureless/inconclusive spectrum (59)
3 = no optical data found (165)
if zFlag=1 or 2, then the reference is to the latest optical spectrum,
unless specified otherwise.
Note that for 4FGL J1146.4-3327, J1505.0+0326, J1506.1+3731, and
J2304.3+0618 the published zFlag of "-" was corrected to 0.
Note (4): either a 19-digit ADS Bibcode is given for the redshift, or else
a list of numbers is given for the origin of photometric redshifts:
1 = 2015MNRAS.452.3124D 2015MNRAS.452.3124D, DiPompeo M.A.+
2 = 2022ApJS..2xx..yyyY, Yang Q., Shen Y. arXiv:2206.08989
3 = 2022MNRAS.516.2662K 2022MNRAS.516.2662K. Kunsagi-Mate S.+
4 = 2021arXiv210512985F 2021arXiv210512985F, Flesch E. (milliquas), Cat. VII/290
5 = 2014ApJS..210....9B 2014ApJS..210....9B, Bilicki M.+ (2MASX)
6 = 2016ApJS..225....5B 2016ApJS..225....5B, Bilicki M.+ (WISEA)
7 = 2020ApJS..249....3A 2020ApJS..249....3A, Ahumada R.+ SDSS DR16, Cat. V/154
8 = 2014A&A...568A.126B 2014A&A...568A.126B. Brescia M.+ SDSS DR9, Cat. J/A+A/568/A126
9 = 2018ApJ...862...12G 2018ApJ...862...12G, Gao J.+ SCUSS-u survey, Cat. J/ApJ/862/12
10 = 2007MNRAS.380.1608L 2007MNRAS.380.1608L, Lopes P.A.A.+ LRGs in SDSS-DR5,
Cat. J/MNRAS/380/1608
11 = 2021MNRAS.500.1633B 2021MNRAS.500.1633B. Beck R.+ Pan-STARRS DR1
12a = 2022RAA....22f5001Z 2022RAA....22f5001Z, Zou H., Sui J. (DES DR2)
12b = 2022RAA....22f5001Z 2022RAA....22f5001Z, Zou H., Sui J. (DESI DR9)
12c = 2022RAA....22f5001Z 2022RAA....22f5001Z, Zou H., Sui J. (HSC SSP PDR3)
13 = 2021MNRAS.501.3309Z 2021MNRAS.501.3309Z, Zhou R.+ DESI DR9 (from NOIRlab)
Caution should be exercised whenever only one or two of the
above references are listed, as these can be rather uncertain
or inconsistent with each other.
Note (5): classes in upper-case letters indicate from identifications,
and lower-case letters indicate associations; see 4FGL-DR2
(2020ApJS..247...33A 2020ApJS..247...33A, Cat. J/ApJS/247/33) for details
Note (6): revised classes are as follows:
FSRQ = Flat-Spectrum Radio Quasar
BLLAC = BL Lac Object
NLS1 = Narrow-Line Seyfert 1 Galaxy
SEY = Seyfert galaxy (Type 1, 2, intermediate, LINER)
MIS = Misaligned Jetted AGN
CLAGN = Changing-look AGN
AMB = ambiguous
UNCL = unclassified
Note (7): Radio spectral indexes (S ∝ freqα) are mostly from
SPECFIND (2010A&A...511A..53V 2010A&A...511A..53V, Cat. VIII/85) or calculated using SED data
from NED (α>-0.5, flat or inverted spectrum; α←0.5, steep
spectrum),
The notes and redshifts for 4FGL J0237.7+0206 and J1158.9+0818
were corrected with respect to the published version.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- 4FGLname object designation from 4FGL-DR2
15-107 A93 --- Notes Notes on individual sources
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Acknowledgements:
Heinz Andernach, heinz(at)ugto.mx
References:
Foschini et al., 2021Univ....7..372F 2021Univ....7..372F,
A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei -
Preliminary Results
(End) Heinz Andernach [Univ. Guanajuato], Patricia Vannier [CDS] 23-Nov-2022