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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/A+A/464/211
1811
Chandra and near-IR obs. of Cyg OB2 (Albacete Colombo+, 2007)
ReadMe+ftp
2007A&A...464..211A
Similar Catalogs
Post annotation
1.
J/A+A/464/211/catalog
(c)
Cygnus OB2 source catalog: X-ray sources and near-IR counterparts
(tables 1 and 2 of paper)
(1003 rows)
meta
J/A+A/464/211/catalog
2.
J/A+A/464/211/table3
X-ray source spectroscopy
(580 rows)
meta
J/A+A/464/211/table3
Simple Constraint
List Of Constraints
Query by
Constraints
applied on Columns
(
Output Order:
+
-
)
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Column
Constraint
Explain
(
UCD
)
(ALL)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
(1)
n_[AFM2007]
(char)
S
indicates that X-ray spectroscopy is available in table3
(
meta.ref.url
)
(
DATA_LINK
)
(ALL)
[AFM2007]
(i)
Sequential number
(
meta.record
)
(
ID_MAIN
)
(1)
CXOCYG
(char)
Name (HHMMSS.ss+DDMMSS.s) CXOCYG JHHMMSS.ss+DDMMSS.s in Simbad
(
meta.id
)
(
ID_ALTERNATIVE
)
(1)
RAJ2000
"h:m:s"
(i)
Right ascension (J2000)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
(1)
DEJ2000
"d:m:s"
(i)
Declination (J2000)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
(1)
ePos
arcsec
rms uncertainty on position
(
stat.error
)
(
ERROR
)
(1)
Theta
arcmin
Off-axis angle
(
instr.offset
)
(
INST_ANG_OFFAXIS
)
(1)
Signi
Significance of detection
(
stat.likelihood;obs
)
(
OBS_DETECT-SIGNIF
)
(1)
Area
pix
Source extraction area
(
phys.area
)
(
INST_AREA
)
(1)
fPSF
[0/1] PSF fraction of source events within the extraction area, assuming E=1.49keV
(
instr.saturation
)
(
INST_DET_MISC
)
ALL
cols
(i)
indexed column
(1)
Counts
ct
Background-corrected extracted source counts in the 0.5-8.0keV band (in ct/photon)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
(1)
ExpTime
ks
Exposure time
(
time.duration;obs.exposure
)
(
TIME_EXPTIME
)
(1)
CRtot
ct/ks
Total (0.5-8.0keV) band count rate
(Note 1)
(
phot.count;em.X-ray
)
(
PHOT_COUNT-RATE_X
)
(1)
CRsoft
ct/ks
Soft (0.5-1.7keV) band count rate
(Note 1)
(
phot.count;em.X-ray
)
(
PHOT_COUNT-RATE_X
)
(1)
CRmed
ct/ks
Medium (1.7-2.8keV) band count rate
(Note 1)
(
phot.count;em.X-ray
)
(
PHOT_COUNT-RATE_X
)
(1)
CRhard
ct/ks
Hard (2.8-8.0keV) band count rate
(Note 1)
(
phot.count;em.X-ray
)
(
PHOT_COUNT-RATE_X
)
(1)
Ex
keV
Median photon energy
(
em.energy
)
(
PHYS_ENERGY_X
)
(1)
Var
Logarithm of the KS-test significance, log(P
KS
)
(Note 2)
(
stat.probability;src.var
)
(
VAR_PROBABILITY
)
(1)
n_Var
(char)
[+] +: flare-like sources
(
meta.note
)
(
NOTE
)
(1)
CXOAC
(char)
CXOACJ name (HHMMSS.ss+DDMMSS.s)
(
meta.id
)
(
ID_ALTERNATIVE
)
(1)
2MASS
(char)
2MASSJ name (HHMMSSss+DDMMSSs)
(
meta.id
)
(
ID_ALTERNATIVE
)
(1)
Off
arcsec
(n)
Offset
(
pos.angDistance
)
(
POS_ANG_DIST_GENERAL
)
(1)
Jmag
mag
(n)
2MASS J magnitude
(
phot.mag;em.IR.J
)
(
PHOT_JHN_J
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
(1)
e_Jmag
mag
(n)
rms uncertainty on Jmag
(
stat.error;phot.mag;em.IR.J
)
(
ERROR
)
(1)
Hmag
mag
(n)
2MASS H magnitude
(
phot.mag;em.IR.H
)
(
PHOT_JHN_H
)
(1)
e_Hmag
mag
(n)
rms uncertainty on Hmag
(
stat.error;phot.mag;em.IR.H
)
(
ERROR
)
(1)
Ksmag
mag
(n)
2MASS Ks magnitude
(
phot.mag;em.IR.K
)
(
PHOT_JHN_K
)
(1)
e_Ksmag
mag
(n)
rms uncertainty on Ksmag
(
stat.error;phot.mag;em.IR.K
)
(
ERROR
)
(1)
q_Jmag
(char)
J band photometric quality flag
(Note 1)
(
meta.code.qual
)
(
CODE_QUALITY
)
(1)
q_Hmag
(char)
H band photometric quality flag
(Note 1)
(
meta.code.qual
)
(
CODE_QUALITY
)
(1)
q_Ksmag
(char)
Ks band photometric quality flag
(Note 1)
(
meta.code.qual
)
(
CODE_QUALITY
)
(1)
AV
mag
(n)
Absorption in V band
(
phot.mag;em.opt.V
)
(
PHOT_EXTINCTION_ISM
)
(1)
n_AV
(char)
[n] n indicates stars with unconstrained AV
(
meta.note
)
(
NOTE
)
(2)
Counts
Counts Background subtracted counts in the spectra
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
(2)
log(NH)
cm-2
Best fit hydrogen column density
(
phys.columnDensity;meta.modelled
)
(
PHYS_COLUMN_DENSITY
)
(2)
e_log(NH)
cm-2
rms uncertainty on log(NH)
(
stat.error
)
(
ERROR
)
(2)
kT
keV
(n)
Plasma temperature
(
phys.temperature
)
(
PHYS_TEMP_PLASMA
)
(2)
e_kT
keV
(n)
rms uncertainty on kT
(
stat.error;phys.energy
)
(
ERROR
)
(2)
log(EM)
cm-3
Emission measure
(
phys.emissMeasure
)
(
PHYS_EM-MEASURE
)
(2)
chi2
reduced chi
2
value for the spectral fit
(
stat.fit.chi2
)
(
FIT_CHI2
)
(2)
dof
Degree of freedom for the spectral fit
(
stat.fit.dof
)
(
STAT_N-DOF
)
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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