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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/777/168
  CIV and SiIV broad absorption line troughs in SDSS (Filiz+, 2013)
spectrum
Post annotation
img(gal)
1.J/ApJ/777/168/troughsCIV- (table2) and SiIV- (table3) BAL troughs[spectrum] (801 rows)

 
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)
  BID (char) BAL trough identifier (Note G1)   (meta.id;meta.main)
  SDSS (char) QSO identification; JHHMMSS.ss+DDMMSS.s (meta.id.assoc)
  RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  z   [2/4] Redshift (src.redshift)
  e_z   [0.0002/0.003] Error in z (stat.error;src.redshift)
  L   [0/1] 1=LoBAL (low ionization BAL) flag (meta.code)
  T   [0/1] 1=timescale>1yr (Note 2)   (meta.code)
  Plate1  First-epoch spectrum plate number (meta.id;instr.plate)
  MJD1 d First-epoch Modified Julian observation Date (time.epoch)

ALL cols
    
 (i)indexed column
  Fib1  First-epoch spectrum fiber number (meta.note)
  SN1   [10/40] Signal-to-noise at 1700Å for the first-epoch spectrum (stat.snr)
  Plate2  Second-epoch spectrum plate number (meta.id;instr.plate)
  MJD2 d Second-epoch Modified Julian observation Date (time.epoch)
  Fib2  Second-epoch spectrum fiber number (meta.note)
  SN2   [10/60] Signal-to-noise at 1700Å for the second-epoch spectrum (stat.snr)
  dt d [0.2/1353] Rest-frame timescale between the two observations (time.interval)
  Vmax km/s [-30000/-5074] Maximum (blue-edge) velocity of BAL trough (spect.dopplerVeloc)
  Vmin km/s [-27395/-3000] Minimum (red-edge) velocity of BAL trough (spect.dopplerVeloc)
  Vc1 km/s [-28841/-4074] First-epoch centroid velocity of the BAL trough (spect.dopplerVeloc)
  Vc2 km/s [-28725/-4166] Second-epoch centroid velocity of the BAL trough (spect.dopplerVeloc)
  d1   [-0.03/1] First-epoch average BAL trough depth (phot.flux.density;arith.ratio)
  e_d1   [0/1] Error in d1 (stat.error)

ALL cols
    
 (i)indexed column
  d2   [0/1] Second-epoch average BAL trough depth (phot.flux.density;arith.ratio)
  e_d2   [0/1] Error in d2 (stat.error)
  EW1 0.1nm First-epoch CIV/SiIV equivalent width (Å) (spect.line.eqWidth)
  e_EW1 0.1nm Error in EW1 (stat.error)
  EW2 0.1nm Second-epoch CIV/SiIV equivalent width (Å) (spect.line.eqWidth)
  e_EW2 0.1nm Error in EW2 (stat.error)
  DEW 0.1nm Equivalent width variation ΔEW=EW2-EW1 (arith.rate;spect.line.eqWidth)
  e_DEW 0.1nm Error in DEW (stat.error)
  fEW   [-2/2] Fractional equivalent width variation ΔEW/<EW> = 2(EW2-EW1)/(EW2+EW1) (arith.rate;spect.line.eqWidth;arith.ratio)
  e_fEW  Error in fEW (stat.error)
  Nv   [0/14] Number of variable regions detected in BAL trough (meta.number)
  Sum km/s [0/10960] Total width of the variable regions (spect.line.width)
  fDV   [0/1] Ratio fΔV of total variable region width and the BAL trough width (spect.line.intensity;arith.ratio)
  xBAL (char) (n)Corresponding SiIV/CIV BAL Trough IDs as given in Table 3 or Table 2 (Note 3)   (meta.id.assoc)
  logLb [10-7W] Log of Quasar bolometric luminosity (erg/s) (phys.luminosity)
  e_logLb [10-7W] Error in logLb (stat.error)
  logM [Msun] (n) Log of black-hole mass (phys.mass)
  e_logM [Msun] (n) Error in logM (stat.error)
  logLe [-] (n) [-1.7/0.8] log of luminosity to i Eddington luminosity ratio (phys.luminosity;arith.ratio)
  iMag mag [-29.8/-26.7] Absolute i-band magnitude (phys.magAbs)
  R  (n) [1/598] Radio-loudness parameter (R=F6cm/F2500Å) (phot.flux;arith.ratio)
  Sp1  Interactive spectrum from SDSS for the first epoch (meta.ref.url)
spectrum
  Sp2  Interactive spectrum from SDSS for the second epoch (meta.ref.url)
spectrum

ALL cols
    
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