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

  
J/MNRAS/491/4925
  Changing-state quasars with CRTS (Graham+, 2020)
ReadMe+ftp
2020MNRAS.491.4925G
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/491/4925/table2(c)CSQs selected in CRTS and associated features (111 rows)
2.J/MNRAS/491/4925/tablea1(c)CLQs reported in the literature with CRTS coverage and associated features (61 rows)
3.J/MNRAS/491/4925/tableb1(c)Spectroscopic observations of CSQ candidates (111 rows)
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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)Name (char) Quasar name (SDSS JHHMMSS.s+DDMMSS.s) (meta.id;meta.main)
  (1+2)Vmagmed mag Median CRTS magnitude (phot.mag;em.opt.V)
  (1+2)z  Redshift (src.redshift)
  (1+2)logMBH [Msun] (n) Logarithm of the quasar mass (phys.mass)
  (1)logLV [10-7W] Logarithm of the quasar luminosity (phys.luminosity;em.opt)
  (1+2)Amp mag Optical amplitude (src.var.amplitude)
  (1+2)DBB mag Bayesian block change ΔBB (phot.mag;arith.diff)
  (1+2)SWV1  Slepian wavelet variance measure (stat.variance)
  (1+2)DW1 mag (n) Absolute change in W1 |ΔW1| (phot.mag;arith.diff)
  (1)D(Hb/[OIII])  Change in flux ratio of Hβ to [OIII] (spect.line.intensity;arith.ratio)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)SimbadName (char) (n)Designation understandable by the Simbad data-base (meta.id)
   (ALL)_RA deg (i) Positions from Name (right ascension part) (pos.eq.ra;meta.main)
   (ALL)_DE deg (i) Positions from Name (declination part) (pos.eq.dec;meta.main)
  (2)f_Name (char) [*] Flag on Name (Note 1)   (meta.code)
  (2)Tran (char) Transition (Disappear or Appear) (Note 2)   (src.class)
  (2)Ref  References (Note 3)   (meta.ref)
  (3)MJD1 (char) d First epoch spectra from SDSS (time.epoch)
  (3)MJDsub (char) d Subsequent epoch spectra from SDSS, Palomar (DBSP), and Keck (LRIS, ESI) (time.epoch)

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