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/ApJS/282/13
  AGN flares from ZTF DR23 (He+, 2026)
ReadMe+ftp
2026ApJS..282...13H
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/282/13/table3AGN flares identified using Gaussian Processes, showing features distinct from AGN variability (28504 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)
  AGNFRC   [0/1] 1=high-confidence flare (Note 1)   (meta.code)
  Name (char) AGN name (JHHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
  RAJ2000 deg (i) Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) [-30/88] Declination (J2000) (pos.eq.dec;meta.main)
  z  (n) [0/4.7] Redshift from source catalog (src.redshift)
  r_z (char) Source catalog (Note 2)   (meta.code;meta.bib;src.redshift)
  zCat  Display data from DESI DR1 zcat (V/161), MilliQuas (VII/294), LAMOST QSO DR6-DR9 (Jin+ 2023, J/ApJS/265/25), Quaia (Storey-Fisher+ 2024, J/ApJ/964/69) and WISE AGN R90 cat. (Assef+ 2018, J/ApJS/234/23) within 1" (meta.ref.url)
  Type (char) Source type (Note 3)   (src.class)
  Class (char) Classification result from the ALeRCE, Section 4.3 (Note 4)   (src.class)
  Pdiff  (n) [0/1] Difference, highest and second-highest ALeRCE class probabilities (meta.code.class;stat.probability;arith.diff)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Offset arcsec (n) [0.001/3] Angular separation, ZTF alert position (from ALeRCE) and AGN coordinates (pos.angDistance)
  t0 d [58188/60623.5] Peak time of the flare, MJD (JD-2400000.5) (time.epoch)
  te d [0/4000] Exponential decay timescale of the flare (time.scale)
  tg d [0/4000] Gaussian rise timescale of the flare (time.scale)
  r0-g uJy [5.5/11822] Baseline flux density in g band (phot.flux.density;em.opt.B)
  r0-r uJy [6.9/25150] Baseline flux density in r band (phot.flux.density;em.opt.R)
  Amp-g uJy [0/40649] Flare amplitude in g band (src.var.amplitude;em.opt.B)
  Amp-r uJy [0/20086] Flare amplitude in r band (src.var.amplitude;em.opt.R)
  Maxgap d [54.2/1793.1] Maximum observational gap in light curve (stat.max)
  Sig-gPk   [0.7/18] Significance level, peak g band flux (stat.fit.goodness)
  Sig-rPk   [0.8/18.71] Significance level, peak r band flux (stat.fit.goodness)
  Ng   [0/57] Number, non-flare points exceeding 3{sigma}, g band (meta.number)
  Nr   [0/46] Number, non-flare points exceeding 3{sigma}, r band (meta.number)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  DelBIC   [-47.6/1944.4] Difference, BIC for constant model and flare model (stat.param)
  Np-g   [0/446] Number of points within the flare interval (t0-tg,t0+te), g band (meta.number)
  Np-r   [0/486] Number of points within the flare interval (t0-tg,t0+te), r band (meta.number)
  Fl1   [0/1] Boolean flag, Maxgap>500days (meta.code)
  Fl2   [0/1] Boolean flag, min(Sig-gPk,Sig-rPk)<3 (meta.code)
  Fl3   [0/1] Boolean flag, Ng+Nr>2 (meta.code)
  Fl4   [0/1] Boolean flag, DelBIC<10 (meta.code)
  Fl5   [0/1] Boolean flag, t0+te>max(MJD) or t0-tg<min(MJD) (meta.code)
  Fl6   [0/1] Boolean flag, min(Np-g,Np-r)<(tg+te)/20 (meta.code)
  Fl7   [0/1] Boolean flag, min(Amp-g/r0-g, Amp-r/r0-r)<0.2 (meta.code)
  Fl8   [0/1] Boolean flag, AGN is confused with other sources (meta.code)

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