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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=196
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ColumnValue  Explain   (UCD)
_RAJ200018 58 35.904 "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)
_DEJ2000-78 11 53.52 "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)
_RAB195018 50 50.479 "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)
_DEB1950-78 15 50.53 "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)
_Glon316.180580 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-26.874062 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)
196recno 196  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

1WGAJ1858.5-7811  (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)
RAJ2000284.6496 deg (i) Right ascension of source (J2000) (pos.eq.ra;meta.main)
DEJ2000-78.1982 deg (i) Declination of source (J2000) (pos.eq.dec;meta.main)
Xpos 7666.9 pix The source coordinate in original pixels (pos.cartesian.x;instr.det)
Ypos 7693.8 pix The source coordinate in original pixels (pos.cartesian.y;instr.det)
GLON316.18 deg [0,360] Galactic Longitude (pos.galactic.lon)
GLAT-26.87 deg Galactic Latitude (pos.galactic.lat)
Count 0.00323 ct/s Background subtracted count rate accumulated in PHA bins 24 to 224 (0.24-2.0keV) (phot.count;em.X-ray)
e_Count 0.00096 ct/s Mean error on Count (stat.error;phot.count)
Fx 4.845e-14 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 24 arcsec Optimum source half box size. (instr.param)
RAc.deg284.5187 deg Image center right ascension. (Note 2)   (pos.eq.ra;obs.image)
DEc.deg-78.1751 deg Image center declination. (Note 2)   (pos.eq.dec;obs.image)
Dist.c 2.121 arcmin Offset of detected position from (RAc,DEc) (pos.angDistance)
RAt284.6409 deg Target right ascension (J2000) (Note 3)   (pos.eq.ra)
DEt-78.2001 deg Target declination (J2000) (Note 3)   (pos.eq.dec)
Dist.t 0.157 arcmin Offset of detected position from (RAt,DEt) (pos.angDistance)
OBJECTIRAS 18 508-7815  Original field name as found in event list (meta.id;time.duration;obs.field)
ROR701127   [100000/999999] number of unique sequences (meta.number)
StartDate 1993-03-31T06:53:17 s Observation Starting date/time, DMF secs (Note 13)   (time.start;obs)
EndDate 1993-04-05T00:00:00 s Observation Ending date/time, DMF secs (Note 13)   (time.end;obs)
Ndetect 12  Total number of detections in the image. (meta.number)
IDno 1  The source number in the field (Note 4)   (meta.id;obs.field)
ImageFilerp701127n00_in  FITS image file name (obs.image)
EventFilerp701127n00  Event file name (meta.id;time.duration;meta.file)
SourceIDrp701127n00_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 3.37  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 3.618e-08 ct/pix/s Background count rate (arith.rate;instr.background)
ExpTime 5245 s Exposure time of the field (time.epoch;obs.field)
SR1 0.6667  Softness ratio 11-39/40-85 (Note 7)   (phot.flux;arith.ratio)
e_SR1 0.6086  Mean error on SR1 (stat.error)
HR1 4.0000  Hardness ratio 86-200/40-85 (Note 7)   (phot.flux;arith.ratio)
e_HR1 2.5820  Mean error on HR1 (stat.error)
SR2 0.4286  Hard softness ratio 50-86/87-129 (Note 7)   (phot.flux;arith.ratio)
e_SR2 0.2957  Mean error on SR2 (stat.error)
HR2 0.7143  Hard hardness ratio 130-240/87-129 (Note 7)   (phot.flux;arith.ratio)
e_HR2 0.4182  Mean error on HR2 (stat.error)
Counts 17 ct Total number of counts detected (meta.number)
e_Counts 4.12 ct Mean error on Counts (stat.error;phot.count)
Count1 2 ct Low band (11-39=0.1-0.4keV) counts (phot.count;em.X-ray)
e_Count1 1.41 ct Mean error on Count1 (stat.error)
Count2 3 ct Mid band (40-85=0.4-0.9keV) counts (phot.count;em.X-ray)
e_Count2 1.73 ct Mean error on Count2 (stat.error)
Count3 12 ct High band (86-200=0.92.0keV) counts (phot.count;em.X-ray)
e_Count3 3.46 ct Mean error on Count3 (stat.error)
Chi2 3.305  Variability test (Note 8)   (src.var)
XidFlag    [1] 1 if ID with pre-Rosat X-ray source (meta.code)
Xid1   First name of X-ray identifier (meta.id)
Xid2   2nd name of X-ray identifier (meta.id)
Xid3   3rd name of X-ray identifier (meta.id)
Xid4   4th name of X-ray identifier (meta.id)
IPCcount  ct/s Count rate detected by the Einstein IPC. (phot.count;em.X-ray)
e_IPCcount  ct/s Mean error on IPCcount (stat.error)
IPC/PSPC    Ratio of IPC/PSPC count rates. (phot.flux;arith.ratio)
e_IPC/PSPC    Mean error on IPC/PSPC (stat.error)
OIdFlag1   [1] 1 if ID with optical source (meta.code)
OId1IRAS 18508-781  First name of optical counterpart (meta.id.cross)
OId2   2nd name of optical counterpart (meta.id)
OId3IRAS 18508-781  3rd name of optical counterpart (meta.id)
OId4   4th name of optical counterpart (meta.id)
SIMBAD   Name in SIMBAD data-base (if existing, all blanks removed) (meta.id;meta.dataset)
Vmag 15.50 mag V magnitude of any optical counterpart (phot.mag;em.opt.V)
Fx/Fo 1.800e-02   X-ray over optical flux ratio (Note 11)   (phot.flux;arith.ratio)
AoX 2.14e+00   Optical to X-ray slope (Note 12)   (spect.index)
z 0.1610   Redshift of counterpart (src.redshift)
Class7104   Source classification (Note 14)   (src.class)
GSCseq    GSC Identification: sequence number (meta.id)
GSCreg    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)
GSCext    [NOnoYEye] GSC Extension flag (meta.code)
RIdFlag    [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)
IRASF18507-7815  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)
MPEname   Name in MPE catalog IX/11 (meta.id)
MPEflag    [1,2] Comparison with MPE IX/11 (Note 10)   (meta.code)
MPEcount  ct/s Count from MPE (phot.count;em.X-ray)
e_MPEcount  ct/s Mean error on MPEcount (stat.error)
NH21cm 8.9e+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)
Ori2   [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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