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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/A+A/693/A142
  X-ray blazars without 4FGL-DR4 counterpart (Marchesi+, 2025)
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2025A&A...693A.142M
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/693/A142/catalogCatalog of the 1007 sources without a 4FGL counterpart (1007 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  5BZCAT (char) 5BZCAT source ID, from Massaro et al. (2015. Cat. VII/274) (ID_5BZCAT) (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) Right Ascension (J2000), 5BZCAT source (RA_5BZCAT) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination (J2000), 5BZCAT source (DEC_5BZCAT) (pos.eq.dec;meta.main)
  z  (n) Source redshift (Redshift) (src.redshift)
  Type (char) Object classification from the 5BZCAT (BZB, BZG, BZQ, or BZU) (OBJECT_TYPE) (meta.code.class;src.class)
  Rmag mag (n) Optical, R-band AB magnitude of the source, from the 5BZCAT (RMAG) (phot.mag;em.opt.R)
  F1.5GHz mJy 1.4 GHz flux density of the source, from the 5BZCAT (FLUX1P4GHZ) (phot.flux.density;em.radio.750-1500MHz)
  4XMDR13 (char) Source ID from the 4XMM-DR13 catalog (ID_4XMDR13) (meta.id)
  RAX "h:m:s" (n) Right Ascension (J2000), 4XMM-DR13 counterpart (RA_4XMMDR13) (pos.eq.ra)
  DEX "d:m:s" (n) Declination (J2000), 4XMM-DR13 counterpart (DEC_4XMMDR13) (meta.id.assoc;pos.eq.dec)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  2CSC (char) Source ID from the 2CSC catalog (ID_2CSC) (meta.id)
  RA2deg deg (n) Right Ascension (J2000), 2CSC counterpart (RA_2CSC) (pos.eq.ra)
  DE2 "d:m:s" (n) Declination (J2000), 2CSC counterpart (DEC_2CSC) (meta.id.assoc;pos.eq.dec)
  2SXPS (char) Source ID from the 2SXPS catalog (ID_2SXPS) (meta.id)
  RAS "h:m:s" (n) Right Ascension (J2000), 2SXPS counterpart (RA_2SXPS) (pos.eq.ra)
  DES "d:m:s" (n) Declination (J2000), 2SXPS counterpart (DEC_2SXPS) (meta.id.assoc;pos.eq.dec)
  eRASS1 (char) Source ID from the eRASS1 catalog (ID_eRASS1) (meta.id)
  RAR "h:m:s" (n) Right Ascension (J2000), eRASS1 counterpart (RA_eRASS1) (pos.eq.ra)
  DER "d:m:s" (n) Declination, (J2000), eRASS1 counterpart (DEC_eRASS1) (meta.id.assoc;pos.eq.dec)
  logF02-12 [mW/m2] (n) 0.2-12keV flux (in erg/s/cm2) from one of the four X-ray catalogs, in this order of priority: 4XMM-DR13, 2CSC, 2SXPS, eRASS1 (LogFlux02-12) (phot.flux;em.X-ray)
  b_logF02-12 [mW/m2] (n) 90% confidence level lower boundary on the 0.2-12keV flux (LogFlux02-12_lo) (phot.flux;em.X-ray.medium;phys.atmol.level)
  B_logF02-12 [mW/m2] (n) 90% confidence level upper boundary on the 0.2-12keV flux (LogFlux02-12_up) (phot.flux;em.X-ray.medium;phys.atmol.level)
  Ratio  (n) 0.2-12keV to 1.4GHz flux ratio (Xraytoradiorat) (phot.flux;em.X-ray.medium;arith.ratio)
  lognupeak [Hz] (n) Logarithm of the blazar SED synchrotron peak computed using the Blazar Synchrotron Tool, BlaST (nupeakBLAST) (em.freq)
  e_lognupeak [Hz] Uncertainty on the logarithm of the blazar SED synchrotron peak computed using the Blazar Synchrotron Tool, BlaST (nupeakBLAST_err) (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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