VizieR

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VizieR

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J/ApJS/192/10/table3 Chandra ACIS survey in 383 nearby galaxies. I. (Liu, 2011)
Individual observations of X-ray sources (52542 rows)
  recno=42496
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ColumnValue  Explain   (UCD)
_RAJ200003 26 17.24400 "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)
_DEJ2000-21 20 06.6800 "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)
_RAB195003 24 03.94538 "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)
_DEB1950-21 30 33.4016 "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)
_Glon212.18253217 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-54.36636102 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)
42496recno 42496  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 56   [1/320] Group number (meta.id)
CXOJ032617.244-212006.68  Source name (JHHMMSS.sss+DDMMSS.ss) (Note 1)   (meta.id;meta.main)
IDet2915.s3.6  Individual detection designation (Note 2)   (meta.id;obs)
Exp 18515 s Exposure time after deadtime correction (time.duration;obs.exposure)
MJD52535.122 d Modified Julian Date of observation (time.epoch)
OAA140 arcsec Off-axis angle (instr.offset)
VigF 0.849  Vignetting factor (Note 3)   (instr.param)
eRA 0.05 arcsec Right Ascension statistical positional error (stat.error)
eDE 0.04 arcsec Declination statistical positional error (stat.error)
ePos 1.0 arcsec Source positional uncertainty (Note 4)   (stat.error)
Sigma 64.5  Detection significance (Note 5)   (stat.likelihood;obs)
Cts 651.0 ct Background-subtracted photon counts (Note 6)   (phot.count;em.X-ray)
e_Cts 27.1 ct Uncertainty in Cts (stat.error)
bgct 36.9 ct Expected background counts (Note 7)   (instr.background)
CMS-0.36   The (M-S)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CMS 0.06   Uncertainty in CMS (stat.error)
CHM-0.74   The (H-M)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CHM 0.08   Uncertainty in CHM (stat.error)
FX 3.5e-13 mW/m2 Source flux; in erg/s/cm2 (Note 9)   (phot.flux;em.X-ray)
PKS 8.4e-01   Kolmogorov-Smirnov variability probability (Note 10)   (src.var)
SQHQSS  Source description (Note 11)   (src.class)

_RA051.571850 deg (i) Positions from CXO names (right ascension part) (pos.eq.ra;meta.main)
_DE-21.335189 deg (i) Positions from CXO names (declination part) (pos.eq.dec;meta.main)
  
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