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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/MNRAS/498/4033
-1
Extreme quasar X-ray variability (Timlin+, 2020)
ReadMe+ftp
2020MNRAS.498.4033T
Similar Catalogs
Post annotation
1.
J/MNRAS/498/4033/appena
Quasars with duplicate Chandra observations (table A1)
(1972 rows)
meta
J/MNRAS/498/4033/appena
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
)
Name
(char)
Object Name (HHMMSS.ssss+DDMMSS.ssss)
(
meta.id;meta.main
)
(
ID_MAIN
)
RAJ2000
deg
(i)
Right Ascension (J2000)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEJ2000
deg
(i)
Declination (J2000)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
z
Redshift
(Note 1)
(
src.redshift
)
(
REDSHIFT_HC
)
logNH
[cm-2]
log Galactic column density
(Note 2)
(
phys.columnDensity;pos.galactic
)
(
PHYS_COLUMN_DENSITY
)
MJD
d
MJD of the Chandra observation
(
time.epoch;obs
)
(
TIME_DATE
)
imag
mag
Apparent i-band magnitude
(
phot.mag;em.opt.I
)
(
PHOT_MAG_I
)
Ei
mag
Reddening in the i-band
(Note 3)
(
phot.color.excess
)
(
PHOT_COLOR_EXCESS
)
ObsID
Chandra observation ID
(
meta.id;obs
)
(
OBS_ID
)
Theta
arcmin
Chandra off-axis angle
(
instr.offset
)
(
INST_ANG_OFFAXIS
)
ALL
cols
(i)
indexed column
Tefffull
s
Full-band effective exposure time
(
time.duration;obs.exposure
)
(
TIME_EXPTIME
)
Pbsoft
[0/1] Binomial probability of detection (soft band)
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
Pbhard
[0/1] Binomial probability of detection (hard band)
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
Pbfull
[0/1] Binomial probability of detection (full band)
(
stat.fit.goodness
)
(
STAT_PROBABILITY
)
CTFull
ct
Net counts in the full band
(
phot.count;em.X-ray
)
(
PHOT_COUNTS_X
)
E_CTFull
ct
One sigma upper limit on net counts
(
stat.error;stat.max
)
(
ERROR
)
e_CTFull
ct
One sigma lower limit on net counts
(
stat.error
)
(
ERROR
)
meanSRCExpf
cm2.s
Mean exposure map pixel value of the source region
(
stat.value;obs.field;stat.mean
)
(
STAT_MEAN
)
meanBGExpf
cm2.s
Mean exposure map pixel value of the background region
(
instr.background;obs.field;stat.mean
)
(
STAT_MEAN
)
ChipEdge
[0/1] Chip-edge flag
(Note 4)
(
meta.code
)
(
CODE_MISC
)
Tstart
s
Chandra start time
(
time.start
)
(
TIME_MISC
)
fbrightCl
(n)
[0/1] Bright cluster flag
(Note 5)
(
meta.code
)
(
CODE_MISC
)
BALFlag
(n)
[0/3] BAL flag
(Note 6)
(
meta.code
)
(
CODE_MISC
)
iMAG
mag
Absolute magnitude (corrected to z=2)
(
phys.magAbs
)
(
PHOT_ABS-MAG_BAND
)
logL2500
[10-7W/Hz]
Logarithm of the rest-frame monochromatic 2500Å luminosity (erg/s/Hz)
(
phys.luminosity
)
(
SPECT_LUMINOSITY
)
logF2500
[mW/m2/Hz]
Logarithm of the rest-frame monochromatic 2500Å flux density (erg/cm
2
/s/Hz)
(
phot.flux
)
(
SPECT_FLUX_VALUE
)
logR
Logarithm of the radio-loudness parameter, R
(
phot.flux;arith.ratio
)
(
PHOT_FLUX_RATIO
)
SimbadName
(char)
(n)
Designation understandable by the
Simbad
data-base
(
meta.id
)
(
ID_ALTERNATIVE
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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UCD1
https://cdsannotations.u-strasbg.fr/annotations/vizierTable//
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