J/ApJ/943/51 Combined radio Multi-Survey Cat. (MSC) of 4FGL (Bruzewski+, 2023)
A combined radio multi-survey catalog of Fermi unassociated sources.
Bruzewski S., Schinzel F.K., Taylor G.B.
<Astrophys. J., 943, 51 (2023)>
=2023ApJ...943...51B 2023ApJ...943...51B (SIMBAD/NED BibCode)
ADC_Keywords: Gamma rays; Radio continuum; Cross identifications; Pulsars;
BL Lac objects; Active gal. nuclei
Keywords: High energy astrophysics; Surveys; Radio source catalogs;
Spectral index; Radio astronomy; Active galaxies; Gamma-ray astronomy;
Radio continuum emission; Pulsars
Abstract:
Approximately one-third of existing γ-ray sources identified by
the Fermi Gamma-Ray Space Telescope are considered to be unassociated,
with no known counterpart at other frequencies/wavelengths. These
sources have been the subject of intense scrutiny and observational
effort during the observatory's mission lifetime, and here we present
a method of leveraging existing radio catalogs to examine these
sources without the need for specific dedicated observations, which
can be costly and complex. Via the inclusion of many sensitive
low-frequency catalogs we specifically target steep-spectrum sources
such as pulsars. This work has found steep-spectrum radio sources
contained inside 591 Fermi unassociated fields, with at least 21 of
them being notable for having pulsar-like γ-ray properties as
well. We also identify a number of other fields of interest based on
various radio and γ-ray selections.
Description:
In total we have collected approximately 7 million point sources
spanning the frequency range from 74MHz to 20GHz from 14 catalogs.
See Section 2.
We identify 37041 distinct radio sources inside of the positional
error ellipses of 5746 Fermi fields. See Section 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 487 37041 The Multi-Survey Catalog (MSC)
table3.dat 62 52 Targets of interest
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See also:
VIII/38 : The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys (Griffith+ 1993-1996)
VIII/62 : The Westerbork Northern Sky Survey (WENSS) (Leiden, 1998)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
VIII/69 : The WISH catalogue at 352 MHz (de Breuck+ 2002)
VI/128 : Log of CGPS exposures (Taylor+, 2003-)
VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1) (Mauch+ 2008)
VIII/97 : 74MHz VLA Low-frequency Sky Survey Redux (VLSSr) (Lane+, 2014)
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
VIII/100 : GaLactic and Extragalactic All-sky MWA survey (Hurley-Walker+, 2016)
VIII/111 : VCCS Epoch 1 Bright Catalog Release (Peters+, 2021)
IX/67 : Incremental Fermi LAT 4th cat. (4FGL-DR3) (Fermi-LAT col., 2022)
J/A+AS/124/259 : Westerbork Northern Sky Survey I. (Rengelink+ 1997)
J/MNRAS/384/775 : Bright Source Sample of AT20G Survey (Massardi+, 2008)
J/MNRAS/402/2403 : Australia Telescope 20GHz Survey Cat., AT20G (Murphy+, 2010)
J/MNRAS/432/1294 : Fermi unassociated sources ATCA observations (Petrov+, 2013)
J/MNRAS/434/956 : AT20G high-angular-resolution catalogue (Chhetri+, 2013)
J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)
J/ApJS/213/3 : Low-frequency flat spectrum sources (LORCAT) (Massaro+, 2014)
J/ApJS/217/4 : 2FGL sources observed between 5-9GHz (Schinzel+, 2015)
J/ApJ/820/8 : 3FGL sources statistical classif. (Saz Parkinson+, 2016)
J/A+A/588/A141 : The MWA view of Fermi blazars (Giroletti+, 2016)
J/MNRAS/462/3180 : 3FGL Blazar of Unknown Type classification (Chiaro+, 2016)
J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (Intema+, 2017)
J/A+A/598/A104 : LOFAR Two-metre Sky Survey (Shimwell+, 2017)
J/AJ/153/113 : The CGPS 1420 MHz catalog of compact sources (Taylor+, 2017)
J/ApJ/838/139 : Radio follow-up on 3FGL unassociated sources (Schinzel+, 2017)
J/MNRAS/476/2717 : AT20G-MWACS catalogue (Harvey+, 2018)
J/ApJ/887/18 : Classif. of X-ray counterparts of 3FGL sources (Kaur+, 2019)
J/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
J/ApJ/892/105 : 4th catalog of Fermi LAT-detected AGNs (4LAC) (Ajello+, 2020)
J/AJ/161/14 : The Wide-field VLBA Calibrator Survey (WFCS) (Petrov, 2021)
J/ApJ/914/42 : Radio obs. to 4FGL-DR2 unassociated sources (Bruzewski+, 2021)
J/ApJS/255/30 : VLASS QL Ep.1 Catalog, CIRADA version (Gordon+, 2021)
J/other/PASA/38.58 : Rapid ASKAP Continuum Survey. II. RACS cat. (Hale+, 2021)
J/A+A/659/A1 : LOFAR Two-metre Sky Survey (LoTSS) DR2 (Shimwell+, 2022)
J/A+A/674/A19 : Ellipsoidal var. with compact companions (Gomel+ 2023)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [MSC]
5- 23 A19 --- MSC Generated positional name
(JHHMMSS.ss+DDMMSS.s) (Name)
25- 28 A4 --- --- [4FGL]
30- 41 A12 --- 4FGL Fermi field which contains this
source (JHHMM.m+DDMM) (FermiName)
43- 47 A5 --- ClFermi Fermi object classification (FermiClass) (1)
49- 57 F9.5 deg RAdeg Weighted average of RA (J2000) (RA)
59- 66 E8.3 deg e_RAdeg RAdeg uncertainty (RAErr)
68- 76 F9.5 deg DEdeg Weighted average of declination (J2000) (Dec)
78- 85 E8.3 deg e_DEdeg DEdeg uncertainty (DecErr)
87- 106 A20 --- AT20G05 AT20G 5GHz name (NameAT20G05) (2)
108- 127 A20 --- AT20G08 AT20G 8GHz name (NameAT20G08) (2)
129- 148 A20 --- AT20G20 AT20G 20GHz name (NameAT20G20) (2)
150- 153 A4 --- --- [CGPS]
155- 168 A14 --- CGPS CGPS 1.4GHz name (see
Taylor+ 2017, J/AJ/153/113) (Name_CGPS)
170- 174 I5 --- D5GHZ ? Dedicated 5GHz name (Name_D5GHZ) (3)
176- 180 I5 --- D7GHZ ? Dedicated 7GHz name (Name_D7GHZ) (3)
182- 197 A16 --- FIRST FIRST 1.4GHz name (see VIII/92) (Name_FIRST)
199- 212 A14 --- GLEAM GLEAM 200MHz name (Cat. VIII/100) (Name_GLEAM)
214- 235 A22 --- LOTSS LOTSS 144MHz name
(Shimwell+ 2022, J/A+A/659/A1) (Name_LOTSS)
237- 249 A13 --- NVSS NVSS 1.4GHz name (Cat. VIII/65) (Name_NVSS)
251- 253 A3 --- --- [PMN]
255- 265 A11 --- PMN PMN 4.85GHz name (Cat. VIII/38) (Name_PMN)
267- 271 A5 --- --- [SUMSS]
273- 286 A14 --- SUMSS SUMSS 843MHz name (Cat. VIII/81) (Name_SUMSS)
288- 294 A7 --- --- [TGSSADR]
296- 311 A16 --- TGSSADR TGSS 1.5GHz name
(Intema+ 2017, J/A+A/598/A78) (Name_TGSS)
313- 315 A3 --- --- [V1Q]
317- 335 A19 --- VLASS VLASS 3GHz name (see
Gordon+ 2021, J/ApJS/255/30) (Name_VLASS)
337- 343 I7 --- VLITE ? VLITE 364MHz name (see VIII/111) (Name_VLITE)
345- 349 A5 --- --- [VLSSR]
351- 366 A16 --- VLSSR VLSSR 74MHz name (Cat. VIII/97) (Name_VLSSR)
368- 383 A16 --- WENSS WENSS 325MHz name (Leiden 1998, VIII/62)
(Name_WENSS)
385- 388 A4 --- --- [WISH]
390- 402 A13 --- WISH WISH 352MHZ name (Cat. VIII/69) (Name_WISH)
404- 413 E10.5 Hz RefFreq [1e+08/1e+10]? Reference frequency at the
log-midpoint of data (RefFreq)
415- 424 E10.5 mJy RefFlux [0.1/416980]? Fit flux value at
RefFreq (RefFlux)
426- 435 E10.5 mJy e_RefFlux [0.00047/25384]? RefFlux uncertainty
(RefFluxErr)
437- 443 F7.3 --- alpha [-73/142.2]? Fit spectral index, positive
convention (Alpha)
445- 454 E10.5 --- e_alpha [5e-05/12250]? alpha uncertainty (AlphaErr)
456- 462 F7.3 --- Curve [-16.7/3]? Fit spectral curvature (Curve)
464- 473 E10.5 --- e_Curve [6.1e-05/6.1]? Curve uncertainty (CurveErr)
475- 487 A13 --- Notes Target of interest: "bll-candidate",
"blz-candidate" or "psr-candidate" (Notes)
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Note (1): Classification as follows:
BCU = Blazar candidate of uncertain type - firm identification; 2 occurrences
bcu = Blazar candidate of uncertain type - association; 7899 occurrences
FSRQ = FSRQ type of blazar - firm identification; 590 occurrences
fsrq = FSRQ type of blazar - association; 7099 occurrences
BLL = BL Lac type of blazar - firm identification; 82 occurrences
bll = BL Lac type of blazar - association; 4255 occurrences
unk = Unknown - association; 1054 occurrences
spp = Supernova remnant/Pulsar wind nebula - association; 795 occurrences
snr = Supernova remnant - association; 108 occurrences
pwn = Pulsar wind nebula - association; 15 occurrences
RDG = Radio galaxy - firm identification; 25 occurrences
rdg = Radio galaxy - association; 620 occurrences
MSP = millisecond pulsar - firm identification; 156 occurrences
msp = millisecond pulsar - association; 270 occurrences
NLSY1 = Narrow-line Seyfert 1 - firm identification; 31 occurrences
nlsy1 = Narrow-line Seyfert 1 - association; 266 occurrences
sey = Seyfert galaxy - association; 44 occurrences
PSR = Pulsar, identified by pulsations - firm identification; 231 occurrences
psr = Pulsar, identified by pulsations - association; 37 occurrences
glc = Globular cluster - association; 153 occurrences
sbg = Starburst galaxy - association; 108 occurrences
AGN = Non-blazar active galaxy - firm identification; 3 occurrences
agn = Non-blazar active galaxy - association; 101 occurrences
css = Compact Steep Spectrum radio source - association; 75 occurrences
gal = Normal galaxy (or part) - association; 75 occurrences
ssrq = Steep spectrum radio quasar - association; 62 occurrences
HMB = High-mass binary - firm identification; 50 occurrences
hmb = High-mass binary - association; 14 occurrences
bin = Binary - association; 20 occurrences
LMB = Low-mass binary - firm identification; 1 occurrence
lmb = Low-mass binary - association; 7 occurrences
sfr = Star-forming region - association; 34 occurrences
NOV = Nova - firm identification; 13 occurrences
Note (2): AT20G catalog: Murphy+ 2010, J/MNRAS/402/2403;
<AT20G JHHMMSS.s+DDMMSS> in Simbad.
Note (3): Bruzewski et al. (2021, J/ApJ/914/42)
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [MSC]
5- 23 A19 --- MSC Generated Multi-Survey Catalog (MSC) positional
name (JHHMMSS.ss+DDMMSS.s)
25- 28 A4 --- --- [4FGL]
30- 41 A12 --- 4FGL Fermi field which contains this source
(JHHMM.m+DDMM)
43- 47 F5.2 --- Index [-2.2/0.8] Fit spectral index, positive convention
49- 52 F4.2 --- LP [0/8.5] Fermi spectral curvature
54- 58 F5.2 --- Sig [3.99/17.11] Fermi average significance
60- 62 A3 --- Class Generated classification from various methods (1)
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Note (1): Generated classification as follows:
bll = BL-Lac candidate (6 occurrences)
blz = blazar-like candidate (20 occurrences)
psr = pulsar candidate (26 occurrences)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 09-Dec-2024