VizieR

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Simple Target List Of Targets Fast Xmatch with large catalogs or Simbad

Target Name (resolved by Sesame) or Position:	Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)	Radius Box size

	IX/31	44659		The WGACAT version of ROSAT sources (White+ 2000) ReadMe+ftp Similar Catalogs Post annotation
1.	IX/31/wgacat		The full catalogue (88621 rows) metaIX/31/wgacat

Simple Constraint List Of Constraints

Query by Constraints constraints help

constraints help

applied on Columns (Output Order: + - )

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Column

Constraint

Explain (UCD)

recno

Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

1WGA

(char)

⁽ⁱ⁾ Source name (based on J2000 position) (Note 2) (meta.id;meta.main)

f_1WGA

(char)

[*] '*' indicates multiple entries with the same 1WGA name (Note 2) (meta.code)

RAJ2000

deg

⁽ⁱ⁾ Right ascension of source (J2000) (pos.eq.ra;meta.main)

DEJ2000

deg

⁽ⁱ⁾ Declination of source (J2000) (pos.eq.dec;meta.main)

Xpos

pix

The source coordinate in original pixels (pos.cartesian.x;instr.det)

Ypos

pix

The source coordinate in original pixels (pos.cartesian.y;instr.det)

GLON

deg

[0,360] Galactic Longitude (pos.galactic.lon)

GLAT

deg

Galactic Latitude (pos.galactic.lat)

Count

ct/s

Background subtracted count rate accumulated in PHA bins 24 to 224 (0.24-2.0keV) (phot.count;em.X-ray)

e_Count

ct/s

Mean error on Count (stat.error;phot.count)

ALL cols

⁽ⁱ⁾indexed column

Fx

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

Telescope vignetting correction (Note 1) (instr.param)

ErrorRad

90% confidence source error radius. (stat.error)

BoxSize

Optimum source half box size. (instr.param)

RAc.deg

deg

Image center right ascension. (Note 2) (pos.eq.ra)

DEc.deg

deg

Image center declination. (Note 2) (pos.eq.dec)

Dist.c

Offset of detected position from (RAc,DEc) (pos.angDistance)

RAt

deg

Target right ascension (J2000) (Note 3) (pos.eq.ra)

DEt

deg

Target declination (J2000) (Note 3) (pos.eq.dec)

Dist.t

Offset of detected position from (RAt,DEt) (pos.angDistance)

OBJECT

(char)

Original field name as found in event list (meta.id;time.duration;obs.field)

ROR

[100000/999999] number of unique sequences (meta.number)

StartDate

s

Observation Starting date/time, DMF secs (Note 13) (time.start;obs)

ALL cols

⁽ⁱ⁾indexed column

EndDate

s

Observation Ending date/time, DMF secs (Note 13) (time.end;obs)

Ndetect

Total number of detections in the image. (meta.number)

IDno

The source number in the field (Note 4) (meta.id;obs.field)

ImageFile

(char)

FITS image file name (obs.image)

EventFile

(char)

Event file name (meta.id;time.duration;meta.file)

SourceID

(char)

Unique source identification (Note 5) (meta.id)

PrBkg

[0.0] Probability that the detection is due to a background fluctuation (instr.background)

SNR

The signal to noise ratio of the source (stat.snr)

Qflag

[5,12] Quality flag from bad to good (Note 6) (meta.code.qual)

Region

(char)

[IO] Region of the ROSAT image (I=in, O=out) (meta.note)

Zoom

Rebinning factor of the image (instr.param)

Bgnd

Background count rate (arith.rate;instr.background)

ExpTime

s

Exposure time of the field (time.epoch;obs.field)

ALL cols

⁽ⁱ⁾indexed column

SR1

Softness ratio 11-39/40-85 (Note 7) (phot.flux;arith.ratio)

e_SR1

Mean error on SR1 (stat.error)

HR1

Hardness ratio 86-200/40-85 (Note 7) (phot.flux;arith.ratio)

e_HR1

Mean error on HR1 (stat.error)

SR2

Hard softness ratio 50-86/87-129 (Note 7) (phot.flux;arith.ratio)

e_SR2

Mean error on SR2 (stat.error)

HR2

Hard hardness ratio 130-240/87-129 (Note 7) (phot.flux;arith.ratio)

e_HR2

Mean error on HR2 (stat.error)

Counts

ct

Total number of counts detected (meta.number)

e_Counts

ct

Mean error on Counts (stat.error;phot.count)

Count1

ct

Low band (11-39=0.1-0.4keV) counts (phot.count;em.X-ray)

e_Count1

ct

Mean error on Count1 (stat.error)

Count2

ct

Mid band (40-85=0.4-0.9keV) counts (phot.count;em.X-ray)

ALL cols

⁽ⁱ⁾indexed column

e_Count2

ct

Mean error on Count2 (stat.error)

Count3

ct

High band (86-200=0.92.0keV) counts (phot.count;em.X-ray)

e_Count3

ct

Mean error on Count3 (stat.error)

Chi2

Variability test (Note 8) (src.var)

XidFlag

⁽ⁿ⁾ [1] 1 if ID with pre-Rosat X-ray source (meta.code)

Xid1

(char)

First name of X-ray identifier (meta.id)

Xid2

(char)

2nd name of X-ray identifier (meta.id)

Xid3

(char)

3rd name of X-ray identifier (meta.id)

Xid4

(char)

4th name of X-ray identifier (meta.id)

IPCcount

ct/s

⁽ⁿ⁾ Count rate detected by the Einstein IPC. (phot.count;em.X-ray)

e_IPCcount

ct/s

⁽ⁿ⁾ Mean error on IPCcount (stat.error)

IPC/PSPC

⁽ⁿ⁾ Ratio of IPC/PSPC count rates. (phot.flux;arith.ratio)

e_IPC/PSPC

⁽ⁿ⁾ Mean error on IPC/PSPC (stat.error)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

OIdFlag

⁽ⁿ⁾ [1] 1 if ID with optical source (meta.code)

OId1

(char)

First name of optical counterpart (meta.id.cross)

OId2

(char)

2nd name of optical counterpart (meta.id)

OId3

(char)

3rd name of optical counterpart (meta.id)

OId4

(char)

4th name of optical counterpart (meta.id)

SIMBAD

(char)

Name in SIMBAD data-base (if existing, all blanks removed) (meta.id;meta.dataset)

Vmag

mag

⁽ⁿ⁾ V magnitude of any optical counterpart (phot.mag;em.opt.V)

Fx/Fo

⁽ⁿ⁾ X-ray over optical flux ratio (Note 11) (phot.flux;arith.ratio)

AoX

⁽ⁿ⁾ Optical to X-ray slope (Note 12) (spect.index)

z

⁽ⁿ⁾ Redshift of counterpart (src.redshift)

Class

⁽ⁿ⁾ Source classification (Note 14) (src.class)

GSCseq

⁽ⁿ⁾ GSC Identification: sequence number (meta.id)

GSCreg

⁽ⁿ⁾ GSC Identification: region numer (meta.id)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

QVmag

⁽ⁿ⁾ GSC quasi-V magnitude (phot.mag;em.opt.V)

QBmag

⁽ⁿ⁾ GSC quasi-B magnitude (phot.mag;em.opt.B)

GSCext

(char)

[NOnoYEye] GSC Extension flag (meta.code)

RIdFlag

⁽ⁿ⁾ [1] 1 if ID with radio source (meta.code)

RId1

(char)

First name of radio source (meta.id.cross)

RId2

(char)

Second name of radio source (meta.id)

RId3

(char)

Third name of radio source (meta.id)

S80cm

mJy

⁽ⁿ⁾ radio flux at 80 cm (0.4GHz) (phot.flux.density;em.radio.200-400MHz)

S20cm

mJy

⁽ⁿ⁾ radio flux at 20 cm (1.5GHz) (phot.flux.density;em.radio.1500-3000MHz)

S6cm

mJy

⁽ⁿ⁾ radio flux at 6 cm (5.0GHz) (phot.flux.density;em.radio.3-6GHz)

IRAS

(char)

Name in IRAS (II/125 or II/156) (meta.id)

IdCat

(char)

[HIPC ] Catalog used for optical position (Note 9) (instr.setup)

IDoffset

⁽ⁿ⁾ Offset of Id star from ROSAT position (meta.id)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

oRA

⁽ⁿ⁾ Offset from reference star (Note 9) (pos.eq.ra;arith.diff)

oDE

⁽ⁿ⁾ Offset from reference star (Note 9) (pos.eq.dec;arith.diff)

Vno

⁽ⁿ⁾ [1] Version of WGACAT (meta.code)

MPEname

(char)

Name in MPE catalog IX/11 (meta.id)

MPEflag

⁽ⁿ⁾ [1,2] Comparison with MPE IX/11 (Note 10) (meta.code)

MPEcount

ct/s

⁽ⁿ⁾ Count from MPE (phot.count;em.X-ray)

e_MPEcount

ct/s

⁽ⁿ⁾ Mean error on MPEcount (stat.error)

NH21cm

cm-2

⁽ⁿ⁾ 21cm number of H from Starke et al. (meta.id)

B-V

mag

⁽ⁿ⁾ B-V colour (phot.color;em.opt.B;em.opt.V)

Ori

[1,2] 1 for WGACAT (old), 2 for WGACAT2 (new) (meta.code)

HEASARC

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

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

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