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Simple Target
List Of Targets
Fast Xmatch with large catalogs or Simbad
Target
Name (resolved by
Sesame
) or
Position
:
J2000
B1975
B1950
B1900
B1875
B1855
Galactic
Supergal.
Ecl.J2000
Target dimension:
deg
arcmin
arcsec
NB: The epoch used for the query is the original epoch of the table(s)
Radius
Box size
J/ApJS/269/7
-1
Chandra Cygnus OB2 Legacy Survey: X-ray Catalog (Wright+ 2023)
ReadMe+ftp
2023ApJS..269....7W
Similar Catalogs
Post annotation
1.
J/ApJS/269/7/table2
Chandra Cygnus OB2 Legacy Survey Catalog
(7924 rows)
meta
J/ApJS/269/7/table2
Simple Constraint
List Of Constraints
Query by
Constraints
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
)
(
RECORD
)
Number
[1/7924] X-ray source number within the Chandra Cygnus OB2 Legacy Survey
(
meta.id
)
(
ID_NUMBER
)
Name
(char)
IAU source name, CXOCOB2 JHHMMSS.ss+DDMMSS.s
(
meta.id;meta.main
)
(
ID_MAIN
)
RAJ2000
deg
(i)
Right ascension (J2000.0)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEJ2000
deg
(i)
Declination (J2000.0)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
PosErr
arcsec
1 sigma error circle around source position
(
stat.error
)
(
ERROR
)
PosType
(char)
Method used to estimate source position
(Note 1)
(
meta.code
)
(
CODE_MISC
)
SusFlag
[0] Flag indicating the source is close to known PSF feature
(Note 2)
(
meta.code
)
(
CODE_MISC
)
Signif
Source significance (from full band)
(
stat.fit.goodness
)
(
STAT_SIGNIFICANCE
)
PrbNoSrc
Base 10 logarithm of the p-value for no-source null hypothesis
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
PrbBand
(char)
Band used for PrbNoSrc
(Note 3)
(
instr.bandpass
)
(
OBS_BAND
)
ALL
cols
(i)
indexed column
DetMeth
[0/5] Method used for detecting the candidate source
(Note 4)
(
meta.code
)
(
CODE_MISC
)
ExpTmTot
s
Total exposure time in all observations
(
time.duration;obs
)
(
TIME_EXPTIME
)
ExpTmNom
s
Exposure time in all merged observations used for photometry
(
instr.setup;obs
)
(
TIME_EXPTIME
)
ExpTmFra
Fration of ExpTmTot used for photometry
(
time.expo
)
(
TIME_EXPTIME
)
NumObTot
Total number of observations of the source
(
meta.number
)
(
NUMBER
)
NumObNom
Number of observations of the source merged for photometry
(
meta.number
)
(
NUMBER
)
b_Theta
arcmin
Smallest off-axis angle for merged observations
(
instr.offset
)
(
ERROR
)
Theta
arcmin
Average off-axis angle for merged observations
(
instr.offset
)
(
INST_ANG_OFFAXIS
)
B_Theta
arcmin
Largest off-axis angle for merged observations
(
instr.offset;stat.max
)
(
ERROR
)
PSFFrac
Average PSF fraction (at 1.5keV) for merged observations
(
instr.det.psf
)
(
INST_PSF
)
SrcArea
pix+2
Average aperture area for merged observations
(
phys.angSize;instr.fov
)
(
INST_AREA
)
ProbKSs
Smallest p-value for the non-variable null hypothesis from a single observation
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
ProbKSm
Smallest p-value for the non-variable null hypothesis from all merged observations
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
ALL
cols
(i)
indexed column
SCntFull
ct
Observed counts in merged source apertures (full band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
SCntSoft
ct
Observed counts in merged source apertures (soft band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
SCntHard
ct
Observed counts in merged source apertures (hard band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
BCntFull
ct
Observed counts in merged background regions (full band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
BCntSoft
ct
Observed counts in merged background regions (soft band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
BCntHard
ct
Observed counts in merged background regions (hard band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
BkgScale
Scaling of the background extraction region
(
instr.background
)
(
INST_BACKGROUND
)
NCntFull
ct
Net counts in merged source apertures (full band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
NCntSoft
ct
Net counts in merged source apertures (soft band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
NCntHard
ct
Net counts in merged source apertures (hard band)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
ARFFull
10-7J/cm2/ph
Mean ARF value (full band) (in erg/cm2/ph)
(Note 5)
(
stat.value;stat.mean
)
(
STAT_MEAN
)
ARFSoft
10-7J/cm2/ph
Mean ARF value (soft band) (in erg/cm2/ph)
(Note 5)
(
stat.value;stat.mean
)
(
STAT_MEAN
)
ARFHard
10-7J/cm2/ph
Mean ARF value (hard band) (in erg/cm2/ph)
(Note 5)
(
stat.value;stat.mean
)
(
STAT_MEAN
)
ALL
cols
(i)
indexed column
MedEFull
keV
Median energy of the observed spectrum (full band)
(
em.energy
)
(
PHYS_ENERGY_X
)
MedESoft
keV
(n)
Median energy of the observed spectrum (soft band)
(
em.energy
)
(
PHYS_ENERGY_X
)
MedEHard
keV
(n)
Median energy of the observed spectrum (hard band)
(
em.energy
)
(
PHYS_ENERGY_X
)
FluxFull
mW/m2
Energy flux of the observed spectrum (full band) (in erg/cm2/s)
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
FluxSoft
mW/m2
(n)
Energy flux of the observed spectrum (soft band) (in erg/cm2/s)
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
FluxHard
mW/m2
(n)
Energy flux of the observed spectrum (hard band) (in erg/cm2/s)
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
b_NCntFull
ct
1 sigma lower bound on NCntFull
(
stat.stdev;stat.min
)
(
ERROR
)
B_NCntFull
ct
1 sigma upper bound on NCntFull
(
stat.stdev;stat.max
)
(
ERROR
)
b_NCntSoft
ct
(n)
1 sigma lower bound on NCntSoft
(
stat.stdev;stat.min
)
(
ERROR
)
B_NCntSoft
ct
1 sigma upper bound on NCntSoft
(
stat.stdev;stat.max
)
(
ERROR
)
b_NCntHard
ct
(n)
1 sigma lower bound on NCntHard
(
stat.stdev;stat.min
)
(
ERROR
)
B_NCntHard
ct
1 sigma upper bound on NCntHard
(
stat.stdev;stat.max
)
(
ERROR
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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https://cdsannotations.u-strasbg.fr/annotations/vizierTable//
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