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=42493
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ColumnValue  Explain   (UCD)
_RAJ200003 26 17.11700 "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 11.4000 "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 03.81961 "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 38.1288 "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)
_Glon212.18443238 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-54.36721916 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)
42493recno 42493  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 56   [1/320] Group number (meta.id)
CXOJ032617.117-212011.40  Source name (JHHMMSS.sss+DDMMSS.ss) (Note 1)   (meta.id;meta.main)
IDet4372.s3.u  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)
OAA146 arcsec Off-axis angle (instr.offset)
VigF 0.819  Vignetting factor (Note 3)   (instr.param)
eRA  arcsec Right Ascension statistical positional error (stat.error)
eDE  arcsec Declination statistical positional error (stat.error)
ePos  arcsec Source positional uncertainty (Note 4)   (stat.error)
Sigma -7.1  Detection significance (Note 5)   (stat.likelihood;obs)
Cts 108.1 ct Background-subtracted photon counts (Note 6)   (phot.count;em.X-ray)
e_Cts 15.3 ct Uncertainty in Cts (stat.error)
bgct  ct Expected background counts (Note 7)   (instr.background)
CMS    The (M-S)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CMS    Uncertainty in CMS (stat.error)
CHM    The (H-M)/(H+M+S) X-ray color (Note 8)   (phot.count;arith.ratio)
e_CHM    Uncertainty in CHM (stat.error)
FX 2.0e-14 mW/m2 Source flux; in erg/s/cm2 (Note 9)   (phot.flux;em.X-ray)
PKS    Kolmogorov-Smirnov variability probability (Note 10)   (src.var)
SQH   Source description (Note 11)   (src.class)

_RA051.571321 deg (i) Positions from CXO names (right ascension part) (pos.eq.ra;meta.main)
_DE-21.336500 deg (i) Positions from CXO names (declination part) (pos.eq.dec;meta.main)
  
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