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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/MNRAS/492/719
  Chandra observations of 2106 radio-quiet QSOs (Timlin+, 2020)
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2020MNRAS.492..719T
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spectrum
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1.J/MNRAS/492/719/catalogCatalog[spectrum] (2106 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. (meta.record)
  SDSS (char) SDSS Name (SDSS_Name) (meta.id;meta.main)
  RAJ2000 deg (i) Right Ascension (J2000) (RA) (pos.eq.ra;meta.main)
  DEJ2000 deg (n)(i) [-10.6/69.7] Declination (J2000) (DEC) (pos.eq.dec;meta.main)
  z  (n) [1.7/2.7] Redshift (Z) (src.redshift)
  logNH [cm-2] (n) [19.6/21.2] Galactic column density (LOGNH) (phys.columnDensity;pos.galactic)
  IMAGZ2 mag (n) [-30.0/-21.0] Absolute Magnitude (corrected to z=2) (MI_Z2) (phys.magAbs)
  ObsID (char) Chandra observation ID (ObsID) (meta.id;obs)
  Theta arcmin (n) [0.1/19.4] Chandra offaxis angle (THETA) (instr.offset)
  ExpTimeS s (n) [737/170430] Soft Band exposure time (ExposureTimesoft) (time.duration;obs.exposure)
  ExpTimeH s (n) [737/170430] Hard Band exposure time (ExposureTimehard) (time.duration;obs.exposure)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  PbSoft  Binomial probability of detection (soft band) (Pb_soft) (stat.fit.goodness)
  PbHard  Binomial probability of detection (hard band) (Pb_hard) (stat.fit.goodness)
  Soft-cts ct (n) [1.9/1936.5] Net soft-band counts (Soft_Cts) (phot.count;em.X-ray)
  E_Soft-cts ct (n) [2.3/115.3] Positive error (or upper limit) of net counts (soft band) (Softctsperr) (stat.error;stat.max)
  e_Soft-cts ct (n) [0.0/107.9] Negative error (or lower limit) of net counts (soft band) (Softctsmerr) (stat.error)
  Hard-cts ct (n) [2.0/674.4] Net hard-band counts (Hard_cts) (phot.count;em.X-ray)
  E_Hard-cts ct (n) [2.3/84.8] Positive error (or upper limit) of net counts (hard band) (Hardctsperr) (stat.error;stat.max)
  e_Hard-cts ct (n) [0.0/57.2] Negative error (or lower limit) of net counts (hard band) (Hardctsmerr) (stat.error)
  HR  (n) [0.0/29.8] Hardness Ratio (HRat) (phot.flux;arith.ratio)
  e_HR  (n) [0.0/784.5] Negative error of hardness ratio (HR_merr) (stat.error)
  E_HR  (n) [0.0/28.9] Positive error of hardness ratio (HR_perr) (stat.error;stat.max)
  Gamma  (n) [0.5/3.0] Power-law photon index (both band detections) or limit (single-band detection) (Gamma) (meta.code;spect.index)
  E_Gamma  (n) [-0.9/1.0] Power-law photon index positive error (Gamma_perr) (stat.error;stat.max)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_Gamma  (n) [-0.4/0.6] Power-law photon index negative error (Gamma) (stat.error)
  Soft-Count-rate ct/s Soft-band count rate (SoftCountrate) (phot.count;em.X-ray)
  E_Soft-Count-rate ct/s Positive error on soft-band count rate (SoftCountrate_perr) (stat.error;stat.max)
  e_Soft-Count-rate ct/s Negative error on soft-band count rate (SoftCountrate_merr) (stat.error)
  Soft-flux mW/m2 0.5-2 keV flux (Soft_flux) (phot.flux;em.X-ray)
  e_Soft-flux mW/m2 0.5-2 keV flux lower limit (Softfluxlolim) (stat.error;phot.flux)
  E_Soft-flux mW/m2 0.5-2 keV flux upper limit (Softfluxuplim) (stat.error;stat.max)
  F2kev 10-7J/cm2Rest-frame 2 keV flux density (f2kev) (phot.flux.density;em.X-ray.soft)
  bF2kev 10-7J/cm2Rest-frame 2 keV flux density lower limit (f2kev_lolim) (phot.flux.density;em.X-ray.soft;stat.min)
  BF2kev 10-7J/cm2Rest-frame 2 keV flux density upper limit (f2kev_uplim) (phot.flux.density;em.X-ray.soft;stat.max)
  logL210kev [10-7W] (n) [43.2/46.3] Rest-frame 2-10 keV luminosity (logL_210kev) (phys.luminosity;em.X-ray)
  blogL210kev [10-7W] (n) [43.4/46.3] Rest-frame 2-10 keV luminosity lower limit (logL210kevlolim) (phys.luminosity;em.X-ray)
  BlogL210kev [10-7W] (n) [42.8/46.2] Rest-frame 2-10 keV luminosity upper limit (logL210kevuplim) (phys.luminosity;em.X-ray)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  F2500 10-7J/cm2Rest-frame 2500 Angstrom flux density (f2500) (phot.flux.density)
  logL2500 [10-7W] (n) [28.9/32.2] Rest-frame 2500Å luminosity density (logL_2500) (phys.luminosity)
  alphaox  (n) [-2.2/-0.4] Observed alpha_ox (alphaox) (spect.index)
  balphaox  (n) [-2.1/-0.5] Observed alpha_ox lower limit (alphaox_lolim) (spect.index)
  Balphaox  (n) [-2.4/-0.6] Observed alpha_ox upper limit (alphaox_uplim) (spect.index)
  dalphaox  Difference between observed alpha_ox and the expectation from alpha_ox-L2500 relation (this work) (dalpha_ox) (meta.note)
  dalphaoxJ07  (n) [-0.5/0.8] Difference between observed alpha_ox and the expectation from alpha_ox-L2500 relation (Just et al., 2007ApJ...665.1004J) (dalphaoxJ07) (meta.note)
  bdalphaox  deltaalphaox lower limit (dalphaoxlolim) (stat.error)
  Bdalphaox  deltaalphaox upper limit (dalphaoxuplim) (stat.error)
  ChipEdge  (n) [0/1] If the Target overlapped with the edge of the Chandra CCD (1 for yes, 0 for no) (CHIP_EDGE) (meta.code)
  Obs.Date "Y:M:D" (n)Date of the Chandra observation, iso-8601 (year) (time.epoch)
  ao  (n) [1.0/21.1] Chandra observation cycle (ao) (meta.id;obs)
  multobs  (n) [0/1] Observed more than once in Chandra (1 for yes, 0 for no) (multobs) (meta.code)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Plate  (n) [269/8874] SDSS spectroscopic Plate ID (PLATE) (meta.id)
  MJD  (n) [51614/57520] SDSS spectroscopic MJD (MJD) (meta.id)
  Fiber  (n) [1/999] SDSS spectroscopic Fiber ID (FIBER) (meta.id)
  Umag0 mag (n) [16.2/25.2] Dereddend u-band apparent magnitude from SDSS (U_DERED) (Note 1)   (phot.mag)
  Gmag0 mag (n) [16.0/23.0] Dereddend g-band apparent magnitude from SDSS (G_DERED) (Note 1)   (phot.mag)
  Rmag0 mag (n) [16.0/23.0] Dereddend r-band apparent magnitude from SDSS (R_DERED) (Note 1)   (phot.mag;em.opt.R)
  Imag0 mag (n) [15.8/24.6] Dereddend i-band apparent magnitude from SDSS (I_DERED) (Note 1)   (phot.mag;em.opt.I)
  Zmag0 mag (n) [15.6/23.5] Dereddend z-band apparent magnitude from SDSS (Z_DERED) (Note 1)   (phot.mag)
  SDSSDR  (n) [71.0/142.1] SDSS catalog in which the target was found (SDSS_DR) (meta.id;meta.dataset)
  BALFlag  (n) [0/2] Flag for detected broad absorption lines (BAL_FLAG) (Note 2)   (meta.code)
  FIRSTFlag  (n) [-1/1] Flag indicating if the source was detected in FIRST (FIRST_flag) (Note 3)   (meta.code)
  Dg-i mag (n) [-2.1/0.5] SDSS g-i color relative to the mean (DELTAGI) (phot.color)
  FlagTexp-theta  (n) [0/1] Flag which indicates if the target passed the exposure time – offaxis angle cut (1= passed, 0=did not pass) (FlagTexptheta) (meta.code.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  SNRcont  (n) [-1.0/41.9] Measured signal-to-noise of the line free continuum regions (SNR_cont) (spect.continuum;spect.line)
  logf2500 [107J/cm2](n) [-29.3/-1.0] logarithm of rest-frame 2500Å flux density measured from the spectrum (logf2500) (phot.flux.density)
  CIV-EW 0.1nm (n) [-1.0/857.2] Rest-frame equivalent width of the CIV broad emission line measured directly from the spectrum (CIV_EW) (spect.line.eqWidth)
  e_CIV-EW 0.1nm (n) [-1.0/160.3] Measurement error of rest-frame equivalent width of the CIV broad emission line measured directly from the spectrum (CIVEWERR) (stat.error;spect.line.width)
  CIV-EW-MOD 0.1nm (n) [-1.0/960.4] Rest-frame equivalent width of the CIV broad emission line measured from the Gaussian models (CIVEWMOD) (spect.line.eqWidth)
  e_CIV-EW-MOD 0.1nm (n) [-1.0/165.8] Measurement error of rest-frame equivalent width of the CIV broad emission line measured from the Gaussian models (CIVEWMOD_ERR) (stat.error)
  sigCIV-LINE km/s (n) [-1.0/5177.3] Line dispersion of the CIV broad emission line (CIVLINESIGMA) (phys.veloc.dispersion)
  CIV-peak 0.1nm (n) [-1.0/1569.7] Measured rest-frame peak of the CIV broad emission line (CIV_peak) (phot.flux)
  e_CIV-peak 0.1nm (n) [-1.0/15.6] Uncertainty in the measured rest-frame peak of the CIV broad emission line (CIVpeakERR) (stat.error)
  CIV-FWHM km/s (n) [-1.0/22740.7] Full Width Half Maximum of the modeled CIV broad emission line (CIV_FWHM) (spect.line.width)
  e_CIV-FWHM km/s (n) [-1.0/10596.8] Uncertainty in Full Width Half Maximum of the modeled CIV broad emission line (CIVFWHMERR) (stat.error)
  CIV-LINE-SNR  (n) [-1.0/32.9] Median Signal-to-Noise ratio of the CIV broad emission line (CIVLINESNR) (stat.snr)
  CIII-EW 0.1nm (n) [-999.0/457.5] Rest-frame equivalent width of the CIII broad emission line measured directly from the spectrum (CIII_EW) (spect.line.eqWidth)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_CIII-EW 0.1nm (n) [-999.0/231.1] Measurement error of rest-frame equivalent width of the CIII broad emission line measured directly from the spectrum (CIIIEWERR) (stat.error;spect.line.width)
  CIII-EW-MOD 0.1nm (n) [-999.0/310.3] Rest-frame equivalent width of the CIII broad emission line measured from the Gaussian models (CIIIEWMOD) (spect.line.eqWidth)
  e_CIII-EW-MOD 0.1nm (n) [-999.0/193.8] Measurement error of rest-frame equivalent width of the CIII broad emission line measured from the Gaussian models (CIIIEWMOD_ERR) (stat.error)
  sigCIII-LINE km/s (n) [-999.0/6510.0] Line dispersion of the CIII broad emission line (CIIILINESIGMA) (phys.veloc.dispersion)
  CIII-peak 0.1nm (n) [-999.0/1937.7] Measured rest-frame peak of the CIII broad emission line (CIII_peak) (phot.flux)
  e_CIII-peak 0.1nm (n) [-999.0/20.0] Uncertainty in the measured rest-frame peak of the CIII broad emission line (CIIIpeakERR) (stat.error)
  CIII-FWHM km/s (n) [-999.0/37018.4] Full Width Half Maximum of the modeled CIII broad emission line (CIII_FWHM) (spect.line.width)
  e_CIII-FWHM km/s (n) [-999.0/8300.5] Uncertainty in Full Width Half Maximum of the modeled CIII broad emission line (CIIIFWHMERR) (stat.error)
  CIII-LINE-SNR  (n) [-999.0/37.9] Median Signal-to-Noise ratio of the CIII broad emission line (CIIILINESNR) (stat.snr)
  MgII-EW 0.1nm (n) [-999.0/9357.6] Rest-frame equivalent width of the MgII broad emission line measured directly from the spectrum (MgII_EW) (spect.line.eqWidth)
  e_MgII-EW 0.1nm (n) [-999.0/293.5] Measurement error of rest-frame equivalent width of the MgII broad emission line measured directly from the spectrum (MgIIEWERR) (stat.error;spect.line.width)
  MgII-EWMOD 0.1nm (n) [-999.0/617.3] Rest-frame equivalent width of the MgII broad emission line measured from the Gaussian models (MgIIEWMOD) (spect.line.eqWidth)
  e_MgII-EWMOD 0.1nm (n) [-999.0/140.6] Measurement error of rest-frame equivalent width of the MgII broad emission line measured from the Gaussian models (MgIIEWMOD_ERR) (stat.error)
  sigMgII-LINE km/s (n) [-999.0/5950.5] Line dispersion of the MgII broad emission line (MgIILINESIGMA) (phys.veloc.dispersion)
  MgII-peak 0.1nm (n) [-999.0/2804.0] Measured rest-frame peak of the MgII broad emission line (MgII_peak) (phot.flux)
  e_MgII-peak 0.1nm (n) []? Uncertainty in the measured rest-frame peak of the MgII broad emission line (MgIIpeakERR) (stat.error)
  MgII-FWHM km/s (n) [-999.0/35258.4] Full Width Half Maximum of the modeled MgII broad emission line (MgII_FWHM) (spect.line.width)
  e_MgII-FWHM km/s (n) [-999.0/11485.6] Uncertainty in Full Width Half Maximum of the modeled MgII broad emission line (MgIIFWHMERR) (stat.error)
  MgII-LINE-SNR  (n) [-999.0/30.3] Median Signal-to-Noise ratio of the MgII broad emission line (MgIILINESNR) (stat.snr)
  RL  (n) [0.1/270.6] Radio loudness parameter, F6cm/F2500Å (R6CM2500A) (phot.flux;arith.ratio)
  Sp  Interactive spectrum from SDSS-DR14 (meta.ref.url)
spectrum
  SimbadName (char) (n)Designation understandable by the Simbad data-base (meta.id)

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