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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/645/A95
  NEP raster ROSAT X-ray/Optical catalog (Hasinger+, 2021)
ReadMe+ftp
2021A&A...645A..95H
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/645/A95/table4AGN candidates selected by mid-IR colours (185 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)
  RAI deg (i) Mid-IR AGN candidate right ascension (J2000.0) (pos.eq.ra;meta.main)
  DEI deg (i) Mid-IR AGN candidate declination (J2000.0) (pos.eq.dec;meta.main)
  magOpt mag Optical AB Magnitude (phot.mag;em.opt)
  I1mag mag IRAC I1 AB magnitude (phot.mag;em.IR.3-4um)
  I1-I2 mag Mid-infrared colour IRAC I1-I2 (phot.color;em.IR;em.IR)
  e_I1-I2 mag Error of mid-IR colour (stat.error)
  Class   [1/2] Mid-IR AGN candidate ID class (Note 1)   (meta.code.class)
  zph  Photometric redshift (src.redshift)
  ML  Existence maximum likelihood (stat.likelihood)
  uCTS ct Net X-ray source count upper limit (phot.count;em.X-ray)
  ExpTime s Exposure time (time.duration;obs.exposure)
  uFX 10-17W/m2Upper limit to 0.5-2 keV X-ray flux (Note 2)   (phot.flux;em.X-ray)
  uFX/FO  Upper limit to X-ray to optical flux ratio (phot.flux;stat.max)
  ulogLX [10-7W] Upper limit log (0.5-2 keV luminosity) in erg/s unit (phys.luminosity;em.X-ray)

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