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=42497
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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)
42497recno 42497  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)
IDet4372.s3.12  Individual detection designation (Note 2)   (meta.id;obs)
Exp 57260 s Exposure time after deadtime correction (time.duration;obs.exposure)
MJD52536.444 d Modified Julian Date of observation (time.epoch)
OAA140 arcsec Off-axis angle (instr.offset)
VigF 0.856  Vignetting factor (Note 3)   (instr.param)
eRA 0.03 arcsec Right Ascension statistical positional error (stat.error)
eDE 0.03 arcsec Declination statistical positional error (stat.error)
ePos 1.0 arcsec Source positional uncertainty (Note 4)   (stat.error)
Sigma 118.2  Detection significance (Note 5)   (stat.likelihood;obs)
Cts 2262.8 ct Background-subtracted photon counts (Note 6)   (phot.count;em.X-ray)
e_Cts 50.9 ct Uncertainty in Cts (stat.error)
bgct 99.5 ct Expected background counts (Note 7)   (instr.background)
CMS-0.44   The (M-S)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CMS 0.03   Uncertainty in CMS (stat.error)
CHM-0.78   The (H-M)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CHM 0.04   Uncertainty in CHM (stat.error)
FX 4.0e-13 mW/m2 Source flux; in erg/s/cm2 (Note 9)   (phot.flux;em.X-ray)
PKS 8.8e-01   Kolmogorov-Smirnov variability probability (Note 10)   (src.var)
SQHSSS  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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