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VizieR

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J/ApJS/224/40/table5 Catalog of Chandra ACIS point like sources (Wang+, 2016)
Independent X-ray sources and their average properties in multiple observations (218789 rows)
  CXOGSG===J203900.3+422435
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ColumnValue  Explain   (UCD)
_RAJ200020 39 00.300 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+42 24 35.00 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195020 37 13.425 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+42 13 57.33 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon081.743787 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+00.590777 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
84442recno 84442  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 369   [1/4953] Group Number (meta.id)
CXOGSGJ203900.3+422435  (i) Source name (JHHMMSS.s+DDMMSS) (meta.id;meta.main)

Nobs 4  Number of observations for this source (meta.number)

f_CXOGSG    [*] Projected overlapping galaxies flag (Note 1)   (meta.code)
ePos 1.45 arcsec [1/36] Statistical positional error after Kim et al. (2007, J/ApJS/169/401) (stat.error)
GName   Galaxy source names numbered sequentially based on maximum detection significance (meta.id)
Sep  arcmin [0.002/641] Galaxy source nuclear separation (pos.angDistance)
SepR    [0/3] Galaxy source nuclear separation in units of the galaxy's elliptical radius (pos.angDistance)
Dist 1.0000 Mpc [-0.2/303.5] Distance in Mpc for the X-ray source (pos.distance;pos.heliocentric)
O/D4/3  Observed/Detected statistics (src.var.index)
Lum 5.27e+36 10-7W Maximum luminosity among detections, erg/s (phys.luminosity)
Flux3.32e-14 mW/m2 Average flux among detections, erg/cm2/s (phot.flux;em.X-ray)
Fmax/Fmin 2.8   [1/303734] Fmax/Fmin ratio (Note 2)   (phot.flux;arith.ratio)
E_Fmax/Fmin 0.7700   [0.009/5200] Upper uncertainty on Fmax/Fmin (stat.error;stat.max)
e_Fmax/Fmin 0.7700   Lower uncertainty on Fmax/Fmin (stat.error)
Sig 5.455   [0.01/1997] Maximum detection significance (stat.fit.goodness;instr.saturation;stat.max)
MaxCts 29.048 ct [0.05/136146] Maximum photon counts among the detections (phot.count;em.X-ray)
Phasesh3  Statistics for SSS/QSS/hard/dim phases (Note 3)   (meta.note)
VarKS   Statistics for variability during individual observations using the K-S criterion (Note 4)   (meta.note)
Class   Source identification (Note 5)   (src.class)

_RA309.7512 deg (i) Positions from CXOGSG names (right ascension part) (pos.eq.ra;meta.main)
_DE+42.4097 deg (i) Positions from CXOGSG names (declination part) (pos.eq.dec;meta.main)
  
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