VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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/ApJS/269/7
  Chandra Cygnus OB2 Legacy Survey: X-ray Catalog (Wright+ 2023)
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2023ApJS..269....7W
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1.J/ApJS/269/7/table2Chandra Cygnus OB2 Legacy Survey Catalog (7924 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. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  Number   [1/7924] X-ray source number within the Chandra Cygnus OB2 Legacy Survey ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  Name (char) IAU source name, CXOCOB2 JHHMMSS.ss+DDMMSS.s ((unassigned);(unassigned);(unassigned);spect.line.veloc;arith)
  RAJ2000 deg Right ascension (J2000.0) ((unassigned);src.orbital.Tisserand;stat.min;(unassigned);arith)
  DEJ2000 deg Declination (J2000.0) ((unassigned);spect.dopplerVeloc.radio;arith.factor;(unassigned);arith)
  PosErr arcsec 1 sigma error circle around source position (phot.color;pos.wcs.ctype;arith.grad;time.age;meta.main)
  PosType (char) Method used to estimate source position (Note 1)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  SusFlag   [0] Flag indicating the source is close to known PSF feature (Note 2)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  Signif  Source significance (from full band) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  PrbNoSrc  Base 10 logarithm of the p-value for no-source null hypothesis ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  PrbBand (char) Band used for PrbNoSrc (Note 3)   ((unassigned);(unassigned);(unassigned);meta.ref.url)

ALL cols		    
 (i)indexed column
  DetMeth   [0/5] Method used for detecting the candidate source (Note 4)   ((unassigned);phys.veloc.orbital;arith.diff;pos.eq.dec)
  ExpTmTot s Total exposure time in all observations ((unassigned);(unassigned);arith.factor;(unassigned);stat.param)
  ExpTmNom s Exposure time in all merged observations used for photometry ((unassigned);phys.veloc.orbital;arith.diff;phys.electron.degen;stat.median)
  ExpTmFra  Fration of ExpTmTot used for photometry ((unassigned);phys.veloc.orbital;arith.diff;instr.rmsf;meta.main)
  NumObTot  Total number of observations of the source ((unassigned);phys.veloc.orbital;arith.diff;src.var)
  NumObNom  Number of observations of the source merged for photometry ((unassigned);(unassigned);(unassigned);src.var)
  b_Theta arcmin Smallest off-axis angle for merged observations ((unassigned);(unassigned);(unassigned);spect.line.broad.Stark)
  Theta arcmin Average off-axis angle for merged observations ((unassigned);(unassigned);(unassigned);spect.line.broad.Stark)
  B_Theta arcmin Largest off-axis angle for merged observations (time;pos.wcs.ctype;arith.grad;spect.line.broad.Stark;pos.lsr;meta.main)
  PSFFrac  Average PSF fraction (at 1.5keV) for merged observations (time.epoch;pos.wcs.scale;arith.grad;phot.mag)
  SrcArea pix+2 Average aperture area for merged observations ((unassigned);(unassigned);arith.factor;time.period.rotation;phys.abund.Y)
  ProbKSs  Smallest p-value for the non-variable null hypothesis from a single observation ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  ProbKSm  Smallest p-value for the non-variable null hypothesis from all merged observations (stat.fit.residual;pos.phaseAng;arith.grad;phys.polarization.circular;meta.main)

ALL cols		    
 (i)indexed column
  SCntFull ct Observed counts in merged source apertures (full band) ((unassigned);phys.veloc.orbital;arith.diff;time.duration;(unassigned);(unassigned))
  SCntSoft ct Observed counts in merged source apertures (soft band) ((unassigned);(unassigned);arith.factor;time.duration;(unassigned);(unassigned))
  SCntHard ct Observed counts in merged source apertures (hard band) (stat.weight;(unassigned);arith.factor;time.duration;(unassigned);(unassigned))
  BCntFull ct Observed counts in merged background regions (full band) (phot.color.excess;arith.zp;stat.min;time.duration;(unassigned);(unassigned))
  BCntSoft ct Observed counts in merged background regions (soft band) ((unassigned);obs.atmos;arith.factor;time.duration;(unassigned);(unassigned))
  BCntHard ct Observed counts in merged background regions (hard band) ((unassigned);(unassigned);(unassigned);time.duration;(unassigned);(unassigned))
  BkgScale  Scaling of the background extraction region ((unassigned);(unassigned);stat.min;meta.note)
  NCntFull ct Net counts in merged source apertures (full band) ((unassigned);phys.atmol.branchingRatio;(unassigned);time.duration;(unassigned);(unassigned))
  NCntSoft ct Net counts in merged source apertures (soft band) (phot.color;em.radio.400-750MHz;arith.factor;time.duration;(unassigned);(unassigned))
  NCntHard ct Net counts in merged source apertures (hard band) ((unassigned);(unassigned);(unassigned);time.duration;(unassigned);(unassigned))
  ARFFull 10-7J/cm2/phMean ARF value (full band) (in erg/cm2/ph) (Note 5)   ((unassigned);phys.veloc.orbital;arith.diff;obs.proposal.cycle;src.orbital.meanMotion;meta.main)
  ARFSoft 10-7J/cm2/phMean ARF value (soft band) (in erg/cm2/ph) (Note 5)   ((unassigned);(unassigned);(unassigned);obs.proposal.cycle;src.orbital.meanMotion;meta.main)
  ARFHard 10-7J/cm2/phMean ARF value (hard band) (in erg/cm2/ph) (Note 5)   ((unassigned);phys.veloc.orbital;arith.diff;obs.proposal.cycle;src.orbital.meanMotion;meta.main)

ALL cols		    
 (i)indexed column
  MedEFull keV Median energy of the observed spectrum (full band) ((unassigned);instr.det.psf;stat.min;instr.sensitivity)
  MedESoft keV (n) Median energy of the observed spectrum (soft band) ((unassigned);phys.atmol.qn.S;arith.grad;instr.sensitivity)
  MedEHard keV (n) Median energy of the observed spectrum (hard band) ((unassigned);(unassigned);(unassigned);instr.sensitivity)
  FluxFull mW/m2 Energy flux of the observed spectrum (full band) (in erg/cm2/s) ((unassigned);instr.beam;stat.min;meta.abstract;(unassigned);(unassigned))
  FluxSoft mW/m2 (n) Energy flux of the observed spectrum (soft band) (in erg/cm2/s) ((unassigned);(unassigned);(unassigned);meta.abstract;(unassigned);(unassigned))
  FluxHard mW/m2 (n) Energy flux of the observed spectrum (hard band) (in erg/cm2/s) ((unassigned);(unassigned);(unassigned);meta.abstract;(unassigned);(unassigned))
  b_NCntFull ct 1 sigma lower bound on NCntFull ((unassigned);(unassigned);(unassigned);meta.id.PI;arith.ratio)
  B_NCntFull ct 1 sigma upper bound on NCntFull ((unassigned);(unassigned);(unassigned);meta.id.PI;pos.phaseAng;meta.main)
  b_NCntSoft ct (n) 1 sigma lower bound on NCntSoft ((unassigned);(unassigned);(unassigned);meta.id.PI;arith.ratio)
  B_NCntSoft ct 1 sigma upper bound on NCntSoft ((unassigned);(unassigned);(unassigned);meta.id.PI;pos.phaseAng;meta.main)
  b_NCntHard ct (n) 1 sigma lower bound on NCntHard ((unassigned);(unassigned);(unassigned);meta.id.PI;arith.ratio)
  B_NCntHard ct 1 sigma upper bound on NCntHard ((unassigned);(unassigned);(unassigned);meta.id.PI;pos.phaseAng;meta.main)

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