VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

Simple TargetList Of TargetsFast 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

  
J/MNRAS/498/4033
  Extreme quasar X-ray variability (Timlin+, 2020)
ReadMe+ftp
2020MNRAS.498.4033T
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/498/4033/appenaQuasars with duplicate Chandra observations (table A1) (1972 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  Name (char) Object Name (HHMMSS.ssss+DDMMSS.ssss) ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  RAJ2000 deg Right Ascension (J2000) ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);arith)
  DEJ2000 deg Declination (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  z  Redshift (Note 1)   ((unassigned);(unassigned);(unassigned);pos.parallax;meta.main)
  logNH [cm-2] log Galactic column density (Note 2)   ((unassigned);(unassigned);(unassigned);(unassigned);)
  MJD d MJD of the Chandra observation ((unassigned);(unassigned);(unassigned);pos.centroid;stat.param)
  imag mag Apparent i-band magnitude ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
  Ei mag Reddening in the i-band (Note 3)   ((unassigned);(unassigned);arith.factor;pos.lsr)
  ObsID  Chandra observation ID ((unassigned);em.wl.effective;stat.min;spect.line.veloc;stat.median)
  Theta arcmin Chandra off-axis angle ((unassigned);(unassigned);(unassigned);spect.line.broad.Stark)

ALL cols		    
 (i)indexed column
  Tefffull s Full-band effective exposure time ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);(unassigned);meta.main)
  Pbsoft   [0/1] Binomial probability of detection (soft band) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  Pbhard   [0/1] Binomial probability of detection (hard band) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  Pbfull   [0/1] Binomial probability of detection (full band) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  CTFull ct Net counts in the full band ((unassigned);instr.det.noise;stat.min;time.duration;(unassigned);(unassigned))
  E_CTFull ct One sigma upper limit on net counts (spect.index;meta.ref.orcid;arith.factor;time.age;pos.phaseAng;meta.main)
  e_CTFull ct One sigma lower limit on net counts ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  meanSRCExpf cm2.s Mean exposure map pixel value of the source region ((unassigned);(unassigned);(unassigned);obs.proposal.cycle;time.period;spect.dopplerVeloc.radio;meta.main)
  meanBGExpf cm2.s Mean exposure map pixel value of the background region ((unassigned);(unassigned);(unassigned);meta.note;time.lifetime;spect.dopplerVeloc.radio;meta.main)
  ChipEdge   [0/1] Chip-edge flag (Note 4)   ((unassigned);phys.veloc.orbital;arith.diff;pos.eq.dec)
  Tstart s Chandra start time ((unassigned);(unassigned);(unassigned);(unassigned);meta.main)
  fbrightCl  (n) [0/1] Bright cluster flag (Note 5)   ((unassigned);instr.filter;(unassigned);pos.eq.dec)
  BALFlag  (n) [0/3] BAL flag (Note 6)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  iMAG mag Absolute magnitude (corrected to z=2) ((unassigned);(unassigned);(unassigned);(unassigned))
  logL2500 [10-7W/Hz]Logarithm of the rest-frame monochromatic 2500Å luminosity (erg/s/Hz) ((unassigned);(unassigned);(unassigned);(unassigned))
  logF2500 [mW/m2/Hz]Logarithm of the rest-frame monochromatic 2500Å flux density (erg/cm2/s/Hz) ((unassigned);(unassigned);(unassigned);meta.abstract)
  logR  Logarithm of the radio-loudness parameter, R ((unassigned);(unassigned);(unassigned);meta.abstract;instr.offset)
  SimbadName (char) (n)Designation understandable by the Simbad data-base ((unassigned);(unassigned);(unassigned);spect.line.veloc)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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