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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/ApJ/900/141
-1
X-ray weak quasars from SDSS & Chandra (Pu+, 2020)
ReadMe+ftp
2020ApJ...900..141P
Similar Catalogs
Post annotation
1.
J/ApJ/900/141/xqsos
Chandra observations and X-ray and optical properties (Tables 2 and 3)
(1825 rows)
meta
J/ApJ/900/141/xqsos
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
)
SDSS
(char)
SDSS designation (HHMMSS.ss+DDMMSS.s; J2000)
(Note G1)
(
meta.id;meta.main
)
(
ID_MAIN
)
DR
[7/10] SDSS Data release
(
meta.id;meta.dataset
)
(
ID_CATALOG
)
z
[1.7/2.7] Redshift
(Note 1)
(
src.redshift
)
(
REDSHIFT_HC
)
ObsID
[323/17627] Chandra observation identifier
(
meta.id;obs.param;obs
)
(
OBS_ID
)
Exp
ks
[0.6/166] Chandra effective exposure time in the broad band
(
time.duration;obs.exposure
)
(
TIME_EXPTIME
)
l_CtsBB
(char)
Limit flag on CtsBB
(Note 2)
(
meta.code.error
)
(
CODE_LIMIT
)
CtsBB
ct
[1.9/841] Broad-band (0.5-7keV) net counts in source region
(Note 2)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
e_CtsBB
ct
(n)
[1.3/39.5] Lower uncertainty on CtsBB
(
stat.error
)
(
ERROR
)
E_CtsBB
ct
(n)
[2.7/41] Upper uncertainty on CtsBB
(
stat.error;stat.max
)
(
ERROR
)
l_CtsSB
(char)
Limit flag on CtsSB
(Note 2)
(
meta.code.error
)
(
CODE_LIMIT
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
CtsSB
ct
[1.9/721] Soft-band (0.5-2keV) net counts in source region
(Note 2)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
e_CtsSB
ct
(n)
[1.3/29.1] Lower uncertainty on CtsSB
(
stat.error
)
(
ERROR
)
E_CtsSB
ct
(n)
[2.7/30.1] Upper uncertainty on CtsSB
(
stat.error;stat.max
)
(
ERROR
)
l_CtsHB
(char)
Limit flag on CtsHB
(Note 2)
(
meta.code.error
)
(
CODE_LIMIT
)
CtsHB
ct
[1.9/212.8] Hard-band (2-7keV) net counts in source region
(Note 2)
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
e_CtsHB
ct
(n)
[1.3/22.4] Lower uncertainty on CtsHB
(
stat.error
)
(
ERROR
)
E_CtsHB
ct
(n)
[2.7/23.6] Upper uncertainty on CtsHB
(
stat.error;stat.max
)
(
ERROR
)
BRatio
(n)
[0.04/10.25] Band ratio, hard-band to soft-band counts
(Note 3)
(
phot.flux;arith.ratio
)
(
SPECT_FLUX_RATIO
)
e_BRatio
(n)
[0.02/9] Lower uncertainty on BRatio
(
stat.error
)
(
ERROR
)
E_BRatio
(n)
[0.03/84] Upper uncertainty on BRatio
(
stat.error;stat.max
)
(
ERROR
)
Gamma
[-1.4/4] 0.5-7keV effective power-law photon index
(Note 4)
(
meta.code;spect.index;em.X-ray.medium
)
(
SPECT_SP-INDEX
)
e_Gamma
(n)
[0.1/4.6] Lower uncertainty on Gamma
(
stat.error
)
(
ERROR
)
E_Gamma
(n)
[0.1/2.3] Upper uncertainty on Gamma
(
stat.error;stat.max
)
(
ERROR
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
SamB
[0/1] Member of sample B
(Note 5)
(
meta.code
)
(
CODE_MISC
)
SamC
[0/1] Member of sample C
(Note 5)
(
meta.code
)
(
CODE_MISC
)
iMag
mag
[-29.7/-22.8] Absolute i-band magnitude
(
phys.magAbs;em.opt.I
)
(
PHOT_ABS-MAG_BAND
)
l_F2keV
(char)
Limit flag for f2keV
(
meta.code.error
)
(
CODE_LIMIT
)
F2keV
10-32mW/m2/Hz
[0.01/95] Rest-frame 2keV flux density, 10
–32
erg/cm
2
/s/Hz
(Note 6)
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
l_F0.5-7
(char)
Limit flag for F0.5-7
(
meta.code.error
)
(
CODE_LIMIT
)
F0.5-7
10-14mW/m2
[0.1/54] Observed-frame 0.5-7keV flux, 10
–14
erg/cm
2
/s
(Note 7)
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
l_logLX
(char)
Limit flag for logLX
(
meta.code.error
)
(
CODE_LIMIT
)
logLX
10-7W
[43.2/46] Logarithm of the rest-frame 2-10 keV luminosity, erg/s
(Note 7)
(
phys.luminosity;em.X-ray
)
(
PHYS_LUMINOSITY_X
)
F2500
10-27mW/m2/Hz
[0.02/12.4] Rest-frame 2500Å flux density, 10
–27
erg/cm
2
/s/Hz
(
phot.flux.density
)
(
SPECT_FLUX_VALUE
)
l_aOX
(char)
Limit flag for aOX
(
meta.code.error
)
(
CODE_LIMIT
)
aOX
[-2.5/-0.9] Measured X-ray-to-optical power-law slope
(Note 6)
(
spect.index
)
(
SPECT_SP-INDEX
)
l_DaOX
(char)
Limit flag for DaOX
(
meta.code.error
)
(
CODE_LIMIT
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
DaOX
[-1/0.43] Difference between the measured and expected aOX
(Note 8)
(
stat.fit.residual
)
(
FIT_RESIDUAL
)
l_fweak
(char)
Limit flag for fweak
(
meta.code.error
)
(
CODE_LIMIT
)
fweak
[0.1/415] X-ray weakness factor measured from DaOX
(
stat.fit.param
)
(
FIT_PARAM_VALUE
)
REW
0.1nm
[0.9/479.1] Rest-frame equivalent width, CIV1549Å emission line
(
spect.line.eqWidth
)
(
SPECT_EQ-WIDTH
)
D(g-i)
mag
[-0.97/2.67] Relative g-i color index
(
phot.color;em.opt.B;em.opt.I
)
(
PHOT_CI_B-I
)
l_R
(char)
Limit flag on R
(
meta.code.error
)
(
CODE_LIMIT
)
R
[1.3/247.2] Radio-loudness parameter
(Note 9)
(
phot.flux;arith.ratio
)
(
PHOT_FLUX_RATIO
)
XWeak
[0/1] X-ray weak flag
(Note 10)
(
meta.code
)
(
CODE_MISC
)
Sloan
Display the online SDSS-DR14 data for the nearest object
(
meta.ref.url
)
(
DATA_LINK
)
Simbad
ask the
Simbad
data-base about this object
(
meta.ref.url
)
(
DATA_LINK
)
NED
ask the
NED
data-base about this object
(
meta.ref.url
)
(
DATA_LINK
)
_RA
deg
(i)
Right Ascension (J2000) from SIMBAD (not part of the original data)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
_DE
deg
(i)
Declination (J2000) from SIMBAD (not part of the original data)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
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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