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/ApJ/874/8
  Follow-up spectroscopy of SDSS changing-look QSOs (Macleod+, 2019)
ReadMe+ftp
2019ApJ...874....8M
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/874/8/table2Changing-look quasar (CLQ) candidates (262 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) (i) SDSS identifier (HHMMSS.ss+DDMMSS.s; J2000) (meta.id;meta.main)
  Sp (char) link to spectral decomposition (Table 3) (meta.ref.url)
  z   [0.15/0.82] Spectroscopic redshift (src.redshift)
  Ex?   [0/1] Morphology flag (1=extended or 0=point source) (meta.code)
  MJD1p d [51075/56031] Modified Julian Date of first photometric observation (time.epoch)
  gmag1 mag [16.2/22] First SDSS g band (AB) magnitude (phot.mag;em.opt.B)
  e_gmag1 mag [0.005/0.1] Uncertainty in g1mag (stat.error;phot.mag)
  MJD2p d [53655/56588] Modified Julian Date of second photometric observation (time.epoch)
  gmag2 mag [15.9/22.8] Second SDSS g band (AB) magnitude (phot.mag;em.opt.B)
  e_gmag2 mag [0.002/0.15] Uncertainty in g2mag (stat.error;phot.mag)

ALL cols		    
 (i)indexed column
  MJD1s d [51630/55500] Modified Julian Date of first spectroscopic observation (time.epoch)
  MJDPS1 d [55242/56625] Modified Julian Date of PS1 observation (time.epoch)
  gmagPS1 mag [15.9/22.7] Pan-STARRS 1 g band (AB) magnitude (phot.mag;em.opt.B)
  e_gmagPS1 mag [0.005/0.2] Uncertainty in gPS1mag (stat.error)
  MJD2s d [0/58367] Modified Julian Date of second spectroscopic observation (Note 1)   (time.epoch)
  Tel (char) Facility identifier (meta.id)
  CLQ?   [0/1] Changing-look quasar by VI? (meta.code)
  Nsigma  (n) [-1/11.9] Flux deviation at Hβ (stat.stdev;phot.flux)
  PS1  Display data from Pan-STARRS DR1 (II/349) within 1" (meta.ref.url)
  Sloan  Display the online SDSS data for the nearest object (meta.ref.url)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  NED  ask the NED data-base about this object (meta.ref.url)
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

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