VizieR

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VizieR

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J/MNRAS/461/3443/table5 M31 deepest Chandra catalogue of point sources (Vulic+, 2016)
M31 source list (795 rows)
  recno=382
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ColumnValue  Explain   (UCD)
_RAJ200000 42 42.50307 "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+40 51 52.0600 "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)
_RAB195000 39 58.41674 "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+40 35 26.4827 "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)
_Glon121.15228256 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-21.97712128 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)
382recno 382  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Seq382  Source sequential number (meta.record)
CXOU004242.50+405152.0  CXOU J name (HHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
RAJ2000010.677096 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+40.864461 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
Dist24.26 arcmin Distance from the centre of M31 (J004244.33+411607.50) (pos.angDistance)
ePos 0.0 arcsec Positional uncertainty (Note 1)   (stat.error;pos)
theta 1.1 arcmin Average off-axis angle for merged observations (instr.offset;stat.mean)
Nobs 7  Number of observations extracted (meta.number)
DetACIS-S  Detector in which the source was detected, ACIS-I, ACIS-S, or Both (meta.id)
RegB3  Region for a source detected in ACIS-S or Both (obs.field)
Texp 16 ks Total exposure time for merged observations (time.duration;obs.exposure)
TexpMap 6.8e+06 s.cm+2 Totat exposure map for merged observations (obs.param)
Rsrc 1.1 pix Average radius of the source extraction region (in sky pixel = 0.492") (phys.angSize;obs.field;stat.mean)
SNR 32.5  Photometric significance (net counts / upper error on net counts) (0.3-8.0keV) (stat.snr)
Emed 1.8 keV Background-corrected median photon energy (0.3-8.0keV) (em.energy)
Match   Cross-match results from Section 3.4: active galactic nuclei (AGN) or low-mass X-ray binary (LMXB) (meta.code)
  
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