VizieR

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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/ApJ/746/54
  Chandra X-ray observations of SDSS-DR5 QSOs (Gibson+, 2012)
ReadMe+ftp
2012ApJ...746...54G
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/746/54/table1(c)Properties common to each source (264 rows)
2.J/ApJ/746/54/XobsX-ray observations of each source: count rates, total counts, counts in each band (tables 2 and 3) (763 rows)
3.J/ApJ/746/54/table4Spectral model consisting of a Galactic-absorbed power law absorbed by one absorption edge (87 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help 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)
   (ALL)SDSS (char) (i) SDSS name (HHMMSS.ss+DDMMSS.s; J2000) linkRole{X-ray parameters for this source } (meta.id;meta.main)
  (1)z   [0.086/4.976] Redshift (src.redshift)
  (1)Nobs   [2/24] Number of observations (meta.number)
  (1)S (char) S indicates that a spectral model is available for this bright source (table 4) (meta.ref.url)
  (1)RL (char) [*/1] Known radio loud source (Note 1)   (src.class)
  (1)BAL   [0/1] Known broad absorption line (1=BAL quasar) (src.class)
  (1)F2500 mJy (n) [0.107/22.112] 2500Å flux density (Note 2)   (phot.flux.density)
  (1)Rate ct/m2/s [-1.975/1481.93] Constant count rate (phot.count;em.X-ray)
  (1)e_Rate ct/m2/s [0.352/404.062] Rate uncertainty (stat.error)
  (1)Var?   [0/1] Variable source? (Note 3)   (meta.code;src.var)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)RateHQ ct/m2/s (n) [-0.004/72.24] Constant count rate in HQ sample (Note G1)   (phot.count;em.X-ray)
  (1)e_RateHQ ct/m2/s (n) [0.035/3.077] RateHQ uncertainty (Note G1)   (stat.error)
  (1)VarHQ?  (n) [0/1] Variable source in HQ sample? (3) (Note G1)   (meta.code;src.var)
  (1)DR5 (char) Display the SDSS-DR5 quasar catalogs data (Cat. VII/252) for this quasar (meta.ref.url)
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref)
  (1)NED (char) ask the NED data-base about this object (meta.ref)
  (1)_RA deg (i) Positions from SDSS names (right ascension part) (pos.eq.ra;meta.main)
  (1)_DE deg (i) Positions from SDSS names (declination part) (pos.eq.dec;meta.main)
  (2+3)ObsId   [304/9880] Observation number (meta.id;obs)
  (2)Exp s [161/170433] Exposure time (time.duration;obs.exposure)
  (2)OA arcmin [0.08/14.88] Off-Axis Angle (instr.offset)
  (2)HQ?   [0/1] In HQ sample flag (1=yes) (Note G1)   (meta.code)
  (2)TSTART s Chandra TSTART parameter (Note 1)   (time.epoch)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)CRate 0.01/m2/s [-5/1600] Source count rate (in units of 10–6ct/cm2/s) (phot.count;em.X-ray)
  (2)E_CRate 0.01/m2/sUpper limit uncertainty on CRate (stat.error;stat.max)
  (2)e_CRate 0.01/m2/sLower limit uncertainty on CRate (stat.error)
  (2)CtLum 10+52ct/s [-237/3533] Count luminosity (phys.luminosity;em.X-ray)
  (2)E_CtLum 10+52ct/sUpper limit uncertainty on CtLum (stat.error;stat.max)
  (2)e_CtLum 10+52ct/sLower limit uncertainty on CtLum (stat.error)
  (2)Full ct [0/33089] Full (0.5-8 keV) band total counts (Note 2)   (phot.count;em.X-ray)
  (2)E_Full ct Upper limit uncertainty on Full (stat.error;stat.max)
  (2)e_Full ct Lower limit uncertainty on Full (stat.error)
  (2)Soft ct [0/24936] Soft (0.5-2 keV) band total counts (phot.count;em.X-ray)
  (2)E_Soft ct Upper limit uncertainty on Soft (stat.error;stat.max)
  (2)e_Soft ct Lower limit uncertainty on Soft (stat.error)
  (2)Hard ct [0/8337] Hard (2-8 keV) band total counts (phot.count;em.X-ray)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)E_Hard ct Upper limit uncertainty on Hard (stat.error;stat.max)
  (2)e_Hard ct Lower limit uncertainty on Hard (stat.error)
  (2)SFcts ct [-6.3/33089] Source full (0.5-8keV) band counts (Note 1)   (phot.count;em.X-ray)
  (2)E_SFcts ct Upper limit uncertainty in SFcts (stat.error;stat.max)
  (2)e_SFcts ct Lower limit uncertainty on SFcts (stat.error)
  (2)SScts ct [-3.7/24936] Source soft (0.5-2 keV) band counts (phot.count;em.X-ray)
  (2)E_SScts ct Upper limit uncertainty on SScts (stat.error;stat.max)
  (2)e_SScts ct Lower limit uncertainty on SFcts (stat.error)
  (2)SHcts ct [-8.6/8337] Source hard (2-8 keV) band counts (phot.count;em.X-ray)
  (2)E_SHcts ct Upper limit uncertainty on SHcts (stat.error;stat.max)
  (2)e_SHcts ct Lower limit uncertainty on SHcts (stat.error)
  (2)bgFcts ct [-0.4/428] Background full (0.5-8 keV) band counts (Note 1)   (instr.background)
  (2)E_bgFcts ct Upper limit uncertainty in bgFcts (stat.error;stat.max)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)e_bgFcts ct Lower limit uncertainty in bgFcts (stat.error)
  (2)bgScts ct [-0.4/75] Background soft (0.5-2 keV) band counts (Note 1)   (instr.background;em.X-ray.soft)
  (2)E_bgScts ct Upper limit uncertainty in bgScts (stat.error;stat.max)
  (2)e_bgScts ct Lower limit uncertainty in bgScts (stat.error)
  (2)bgHcts ct [-0.3/356] Background hard (2-8 keV) band counts (Note 1)   (instr.background;em.X-ray.hard)
  (2)E_bgHcts ct Upper limit uncertainty in bgHcts (stat.error;stat.max)
  (2)e_bgHcts ct Lower limit uncertainty in bgHcts (stat.error)
  (2)HR  (n) [-1/1] Hardness ratio (Note 2)   (phot.flux;arith.ratio)
  (2)E_HR  (n) Upper limit uncertainty on HR (stat.error;stat.max)
  (2)e_HR  (n) Lower limit uncertainty on HR (stat.error)
  (2)Lum 10+35W [-3900/58166] Approximate 0.5-8keV luminosity (Note 3)   (phys.luminosity;em.X-ray)
  (2)E_Lum 10+35W Upper limit uncertainty in Lum (stat.error;stat.max)
  (2)e_Lum 10+35W Lower limit uncertainty in Lum (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)Norm   [1.17/44.1] Normalization at 1keV in units of 10–5photon/keV/cm2/s (stat.fit.param)
  (3)E_Norm   [0.0616/2.47] Positive uncertainty on Norm (stat.error;stat.max)
  (3)e_Norm   [0.0553/1.71] Negative uncertainty on Norm (stat.error)
  (3)Gamma   [0.087/2.899] Photon index Γ (meta.code;spect.index)
  (3)E_Gamma   [0.024/0.354] Positive uncertainty on Gamma (stat.error;stat.max)
  (3)e_Gamma   [0.024/0.222] Negative uncertainty on Gamma (stat.error)
  (3)tau   [0/3.431] Edge optical depth (τ) (phys.absorption.opticalDepth)
  (3)E_tau   [0.014/3.163] Positive uncertainty on tau (stat.error;stat.max)
  (3)e_tau   [0/1.837] Negative uncertainty on tau (stat.error)

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