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=45737
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ColumnValue  Explain   (UCD)
_RAJ200011 21 02.96900 "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+53 10 07.0700 "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)
_RAB195011 18 13.50997 "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+53 26 33.3328 "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)
_Glon149.53162232 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+59.04001604 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)
45737recno 45737  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 93   [1/320] Group number (meta.id)
CXOJ112102.969+531007.07  Source name (JHHMMSS.sss+DDMMSS.ss) (Note 1)   (meta.id;meta.main)
IDet3951.s3.31  Individual detection designation (Note 2)   (meta.id;obs)
Exp 90207 s Exposure time after deadtime correction (time.duration;obs.exposure)
MJD52825.035 d Modified Julian Date of observation (time.epoch)
OAA141 arcsec Off-axis angle (instr.offset)
VigF 0.839  Vignetting factor (Note 3)   (instr.param)
eRA 0.15 arcsec Right Ascension statistical positional error (stat.error)
eDE 0.06 arcsec Declination statistical positional error (stat.error)
ePos 1.0 arcsec Source positional uncertainty (Note 4)   (stat.error)
Sigma 12.1  Detection significance (Note 5)   (stat.likelihood;obs)
Cts 64.3 ct Background-subtracted photon counts (Note 6)   (phot.count;em.X-ray)
e_Cts 9.1 ct Uncertainty in Cts (stat.error)
bgct 19.7 ct Expected background counts (Note 7)   (instr.background)
CMS 0.13   The (M-S)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CMS 0.32   Uncertainty in CMS (stat.error)
CHM-0.25   The (H-M)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CHM 0.30   Uncertainty in CHM (stat.error)
FX 7.3e-15 mW/m2 Source flux; in erg/s/cm2 (Note 9)   (phot.flux;em.X-ray)
PKS 5.8e-01   Kolmogorov-Smirnov variability probability (Note 10)   (src.var)
SQHhard  Source description (Note 11)   (src.class)

_RA170.262371 deg (i) Positions from CXO names (right ascension part) (pos.eq.ra;meta.main)
_DE+53.168631 deg (i) Positions from CXO names (declination part) (pos.eq.dec;meta.main)
  
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