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VizieR

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IX/31/wgacat The WGACAT version of ROSAT sources (White+ 2000)
The full catalogue (88621 rows)
  recno=66203
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ColumnValue  Explain   (UCD)
_RAJ200000 42 42.192 "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 50.04 "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 58.107 "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 24.46 "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)
_Glon121.151204 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-21.977646 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)
66203recno 66203  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

1WGAJ0042.7+4051  (i) Source name (based on J2000 position) (Note 2)   (meta.id;meta.main)
f_1WGA*   [*] '*' indicates multiple entries with the same 1WGA name (Note 2)   (meta.code)
RAJ2000010.6758 deg (i) Right ascension of source (J2000) (pos.eq.ra;meta.main)
DEJ2000+40.8639 deg (i) Declination of source (J2000) (pos.eq.dec;meta.main)
Xpos 7867.6 pix The source coordinate in original pixels (pos.cartesian.x;instr.det)
Ypos 7996.9 pix The source coordinate in original pixels (pos.cartesian.y;instr.det)
GLON121.15 deg [0,360] Galactic Longitude (pos.galactic.lon)
GLAT-21.98 deg Galactic Latitude (pos.galactic.lat)
Count 0.09150 ct/s Background subtracted count rate accumulated in PHA bins 24 to 224 (0.24-2.0keV) (phot.count;em.X-ray)
e_Count 0.00740 ct/s Mean error on Count (stat.error;phot.count)
Fx 1.372e-12 mW/m2 X-ray flux using a constant correction factor of 1.5x10–11 mW/m2 (erg/s/cm2). (phot.flux;em.X-ray)
Vign 1.00  Telescope vignetting correction (Note 1)   (instr.param)
ErrorRad 13 arcsec 90% confidence source error radius. (stat.error)
BoxSize 26 arcsec Optimum source half box size. (instr.param)
RAc.deg 10.6771 deg Image center right ascension. (Note 2)   (pos.eq.ra;obs.image)
DEc.deg 40.8449 deg Image center declination. (Note 2)   (pos.eq.dec;obs.image)
Dist.c 1.142 arcmin Offset of detected position from (RAc,DEc) (pos.angDistance)
RAt 10.7101 deg Target right ascension (J2000) (Note 3)   (pos.eq.ra)
DEt 40.8198 deg Target declination (J2000) (Note 3)   (pos.eq.dec)
Dist.t 3.065 arcmin Offset of detected position from (RAt,DEt) (pos.angDistance)
OBJECTM31 SURVEY 1  Original field name as found in event list (meta.id;time.duration;obs.field)
ROR600363   [100000/999999] number of unique sequences (meta.number)
StartDate 1993-01-03T02:41:15 s Observation Starting date/time, DMF secs (Note 13)   (time.start;obs)
EndDate 1993-01-03T04:42:56 s Observation Ending date/time, DMF secs (Note 13)   (time.end;obs)
Ndetect 8  Total number of detections in the image. (meta.number)
IDno 1  The source number in the field (Note 4)   (meta.id;obs.field)
ImageFileWP600363N00_IN  FITS image file name (obs.image)
EventFileWP600363N00  Event file name (meta.id;time.duration;meta.file)
SourceIDWP600363N00_IN_1  Unique source identification (Note 5)   (meta.id)
PrBkg 0.0   [0.0] Probability that the detection is due to a background fluctuation (instr.background)
SNR 12.40  The signal to noise ratio of the source (stat.snr)
Qflag12   [5,12] Quality flag from bad to good (Note 6)   (meta.code.qual)
RegionI   [IO] Region of the ROSAT image (I=in, O=out) (meta.note)
Zoom 8  Rebinning factor of the image (instr.param)
Bgnd 3.910e-08 ct/pix/s Background count rate (arith.rate;instr.background)
ExpTime 1947 s Exposure time of the field (time.epoch;obs.field)
SR1 0.1957  Softness ratio 11-39/40-85 (Note 7)   (phot.flux;arith.ratio)
e_SR1 0.0713  Mean error on SR1 (stat.error)
HR1 2.1520  Hardness ratio 86-200/40-85 (Note 7)   (phot.flux;arith.ratio)
e_HR1 0.3840  Mean error on HR1 (stat.error)
SR2 0.8889  Hard softness ratio 50-86/87-129 (Note 7)   (phot.flux;arith.ratio)
e_SR2 0.1763  Mean error on SR2 (stat.error)
HR2 0.8148  Hard hardness ratio 130-240/87-129 (Note 7)   (phot.flux;arith.ratio)
e_HR2 0.1655  Mean error on HR2 (stat.error)
Counts 154 ct Total number of counts detected (meta.number)
e_Counts 12.41 ct Mean error on Counts (stat.error;phot.count)
Count1 9 ct Low band (11-39=0.1-0.4keV) counts (phot.count;em.X-ray)
e_Count1 3.00 ct Mean error on Count1 (stat.error)
Count2 46 ct Mid band (40-85=0.4-0.9keV) counts (phot.count;em.X-ray)
e_Count2 6.78 ct Mean error on Count2 (stat.error)
Count3 99 ct High band (86-200=0.92.0keV) counts (phot.count;em.X-ray)
e_Count3 9.95 ct Mean error on Count3 (stat.error)
Chi2 1.146  Variability test (Note 8)   (src.var)
XidFlag1   [1] 1 if ID with pre-Rosat X-ray source (meta.code)
Xid1   First name of X-ray identifier (meta.id)
Xid22E0040.0+4035  2nd name of X-ray identifier (meta.id)
Xid3M31_J004241.4+  3rd name of X-ray identifier (meta.id)
Xid4   4th name of X-ray identifier (meta.id)
IPCcount 0.02 ct/s Count rate detected by the Einstein IPC. (phot.count;em.X-ray)
e_IPCcount 0.00 ct/s Mean error on IPCcount (stat.error)
IPC/PSPC 2.147e-01   Ratio of IPC/PSPC count rates. (phot.flux;arith.ratio)
e_IPC/PSPC 7.037e-03   Mean error on IPC/PSPC (stat.error)
OIdFlag1   [1] 1 if ID with optical source (meta.code)
OId1NGC 221  First name of optical counterpart (meta.id.cross)
OId2BD+40 147  2nd name of optical counterpart (meta.id)
OId3N 221  3rd name of optical counterpart (meta.id)
OId4NGC 221  4th name of optical counterpart (meta.id)
SIMBADBD+40147  Name in SIMBAD data-base (if existing, all blanks removed) (meta.id;meta.dataset)
Vmag 8.20 mag V magnitude of any optical counterpart (phot.mag;em.opt.V)
Fx/Fo 6.131e-04   X-ray over optical flux ratio (Note 11)   (phot.flux;arith.ratio)
AoX 2.71e+00   Optical to X-ray slope (Note 12)   (spect.index)
z-0.0007   Redshift of counterpart (src.redshift)
Class6700   Source classification (Note 14)   (src.class)
GSCseq 2001   GSC Identification: sequence number (meta.id)
GSCreg 2801   GSC Identification: region numer (meta.id)
QVmag    GSC quasi-V magnitude (phot.mag;em.opt.V)
QBmag    GSC quasi-B magnitude (phot.mag;em.opt.B)
GSCextye   [NOnoYEye] GSC Extension flag (meta.code)
RIdFlag1   [1] 1 if ID with radio source (meta.code)
RId1   First name of radio source (meta.id.cross)
RId2   Second name of radio source (meta.id)
RId3   Third name of radio source (meta.id)
S80cm  mJy radio flux at 80 cm (0.4GHz) (phot.flux.density;em.radio.200-400MHz)
S20cm  mJy radio flux at 20 cm (1.5GHz) (phot.flux.density;em.radio.1500-3000MHz)
S6cm  mJy radio flux at 6 cm (5.0GHz) (phot.flux.density;em.radio.3-6GHz)
IRAS00399+4035  Name in IRAS (II/125 or II/156) (meta.id)
IdCat    [HIPC ] Catalog used for optical position (Note 9)   (instr.setup)
IDoffset  arcmin Offset of Id star from ROSAT position (meta.id)
oRA  arcmin Offset from reference star (Note 9)   (pos.eq.ra;arith.diff)
oDE  arcmin Offset from reference star (Note 9)   (pos.eq.dec;arith.diff)
Vno    [1] Version of WGACAT (meta.code)
MPEnameJ004242+4052.0  Name in MPE catalog IX/11 (meta.id)
MPEflag1   [1,2] Comparison with MPE IX/11 (Note 10)   (meta.code)
MPEcount 0.04794 ct/s Count from MPE (phot.count;em.X-ray)
e_MPEcount 0.00468 ct/s Mean error on MPEcount (stat.error)
NH21cm 6.3e+20 cm-2 21cm number of H from Starke et al. (meta.id)
B-V  mag B-V colour (phot.color;em.opt.B;em.opt.V)
Ori1   [1,2] 1 for WGACAT (old), 2 for WGACAT2 (new) (meta.code)

HEASARCWGACAT  Find the related data products available at HEASARC (meta.ref.url)
  
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