VizieR Search Page [Back] ⋅ [Forwd] ⋅ [Print] ⋅ [Close]
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/264/9
  Southern phot. quasars from DES DR2 & NIR surveys (Yang+, 2023)
ReadMe+ftp
2023ApJS..264....9Y
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/264/9/skewtThe DES DR2 skewt-QSO catalog (original column names in green) (1352947 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
Standard Original
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  CoadID   [870246065/1700559127] Unique identifier for the coadded objects (COADD_OBJECT_ID) (meta.id;meta.main)
  RAJ2000 deg (i) DES right ascension (J2000) (ALPHAWIN_J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) [-67.5/5.4] DES declination (J2000) (DELTAWIN_J2000) (pos.eq.dec;meta.main)
  ClCoad  (n) [0/3] DES morphological object classification variable (EXTENDED_COADD) (Note 1)   (meta.code.class)
  SNmax   [5/9989] Max. S/N of the PSF mag in DES (SN_MAX_PSF) (stat.snr)
  SN3   [3/11] Number of bands in DES with S/N>3 (meta.number)
  Phot (char) DES photometry fitting to quasar and star models; "PSF" or "AUTO" (PHOTOMETRY) (meta.note)
  Band (char) [grizy] DES bands (BAND_DES) (meta.code;instr.filter)
  gmagPSF mag (n) [-18.3/25.5] g-band DES PSF magnitude (MAG_PSF_G) (phot.mag;em.opt.B)
  e_gmagPSF mag (n) [0.0002/1.3] gmagPSF uncertainty (MAGERR_PSF_G) (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  rmagPSF mag (n) [14.3/25] r-band DES PSF magnitude (MAG_PSF_R) (phot.mag;em.opt.R)
  e_rmagPSF mag (n) [0.0001/1.1] rmagPSF uncertainty (MAGERR_PSF_R) (stat.error)
  imagPSF mag (n) [14.7/24.8] i-band DES PSF magnitude (MAG_PSF_I) (phot.mag;em.opt.I)
  e_imagPSF mag (n) [0.0002/2.2] imagPSF uncertainty (MAGERR_PSF_I) (stat.error)
  zmagPSF mag (n) [14.5/24] z-band DES PSF magnitude (MAG_PSF_Z) (phot.mag;em.opt.I)
  e_zmagPSF mag (n) [0.0003/2.1] zmagPSF uncertainty (MAGERR_PSF_Z) (stat.error)
  YmagPSF mag (n) [14.2/23.2] Y-band DES PSF magnitude (MAG_PSF_Y) (phot.mag;em.IR.J)
  e_YmagPSF mag (n) [0.0005/4] YmagPSF uncertainty (MAGERR_PSF_Y) (stat.error)
  gmag mag (n) [12.8/37.6] DES AUTO g-band magnitude (MAG_AUTO_G) (phot.mag;em.opt.B)
  e_gmag mag [9e-5/28100] Uncertainty on gmag (MAGERR_AUTO_G) (stat.error;phot.mag)
  rmag mag (n) [13/32.2] DES AUTO r-band magnitude (MAG_AUTO_R) (phot.mag;em.opt.R)
  e_rmag mag [7e-5/271] Uncertainty on rmag (MAGERR_AUTO_R) (stat.error;phot.mag)
  imag mag (n) [13.6/33.1] DES AUTO i-band magnitude (MAG_AUTO_I) (phot.mag;em.opt.I)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_imag mag [0.0002/1493] Uncertainty on imag (MAGERR_AUTO_I) (stat.error;phot.mag)
  zmag mag (n) [13.3/33.8] DES AUTO z-band magnitude (MAG_AUTO_Z) (phot.mag;em.opt.I)
  e_zmag mag [0.0002/2282] Uncertainty on zmag (MAGERR_AUTO_Z) (stat.error;phot.mag)
  Ymag mag (n) [12.9/33.5] DES AUTO Y-band magnitude (MAG_AUTO_Y) (phot.mag;em.IR.J)
  e_Ymag mag [0.0004/9385] Uncertainty on Ymag (MAGERR_AUTO_Y) (stat.error;phot.mag)
  sigPlx  (n) [0/5] Gaia DR2 parallax significance (PLXSIG) (stat.fit.goodness;pos.parallax)
  sigPM  (n) [0/5] Gaia DR2 proper-motion significance (PMSIG) (stat.fit.goodness;pos.pm)
  sepGaia arcsec (n) [0/2] Angular distance between DES and Gaia coordinates (SEPARATION_GAIA) (pos.angDistance)
  CNT9   [0/29] Number of sources with a 9" radius circular aperture (meta.number)
  Dist arcsec [0.001/10] Angular distance to the closest neighbor within 9" (pos.angDistance)
  CatNIR (char) NIR survey; i.e. VHS, VIKING, LAS, 2MASS or UHS (SURVEY_NIR) (meta.id)
  BandNIR (char) [JHKY ] NIR bands (BAND_NIR) (meta.code;instr.filter)
  NbNIR   [0/4] Number of NIR bands (NBAND_NIR) (meta.number)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  sepNIR arcsec [0/2] Angular distance between DES and NIR coordinates (SEPARATION_NIR) (pos.angDistance)
  Ymag2 mag (n) [12.8/23.3] Y band (AB) magnitude (MAG_Y) (phot.mag;em.IR.J)
  e_Ymag2 mag (n) [0.001/0.7] Uncertainty on Ymag (MAGERR_Y) (stat.error)
  Jmag mag (n) [13.8/25.4] J-band (AB) magnitude (MAG_J) (phot.mag;em.IR.J)
  e_Jmag mag (n) [0.001/8] Uncertainty on Jmag (MAGERR_J) (stat.error;phot.mag)
  Hmag mag (n) [13/24.1] H-band (AB) magnitude (MAG_H) (phot.mag;em.IR.H)
  e_Hmag mag (n) [0.0009/5] Uncertainty on Hmag (MAGERR_H) (stat.error;phot.mag)
  Kmag mag (n) [12.3/22.7] K band (AB) magnitude (MAG_K) (phot.mag;em.IR.K)
  e_Kmag mag (n) [0.0009/2.2] Uncertainty on Kmag (MAGERR_K) (stat.error;phot.mag)
  BandW (char) [W1/W2 ] WISE bands (BAND_WISE) (meta.code;instr.filter)
  NbW   [0/2] Number of WISE bands (NBAND_WISE) (meta.number)
  sepWISE arcsec (n) [0/2] Angular distance between DES and unWISE coordinates (SEPARATION_WISE) (pos.angDistance)
  W1mag mag (n) [11.3/22.5] WISE W1 (3.4um) band (AB) magnitude (MAG_W1) (phot.mag;em.IR.3-4um)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_W1mag mag (n) [0.0003/0.5] Uncertainty on W1mag (MAGERR_W1) (stat.error;phot.mag)
  W2mag mag (n) [10.7/21.5] WISE W2 (4.6um) band (AB) magnitude (MAG_W2) (phot.mag;em.IR.4-8um)
  e_W2mag mag (n) [-1.5/0.5] Uncertainty on W2mag (MAGERR_W2) (stat.error;phot.mag)
  Comb (char) DES, NIR, and MIR band combination (COMBINATION) (meta.note)
  Ref (char) [grizy] DES reference band (REFERENCE_BAND) (meta.ref;instr.bandpass)
  Pqso   [0.3/1] PQSO, skewt-QSO probability fitting to QSO models, described in Equation (10) (P_QSO) (stat.fit.goodness)
  zphotQ   [0.1/7.4] Quasar photo-z (PHOTOZ_QSO) (src.redshift.phot)
  z1Q   [0.05/7.2] Lower limit of quasar photo-z (Z1_QSO) (src.redshift.phot;stat.min)
  z2Q  (n) [0.15/7.9] Upper limit of quasar photo-z (Z2_QSO) (src.redshift.phot;stat.max)
  PzQ   [1e-7/1] Probability of quasar photo-z locating within (z1Q, z2Q), described in Equation (5) (P_QSO_Z) (stat.fit.goodness)
  Pgal   [6e-21/0.5] PGalaxy, skewt-QSO probability fitting to galaxy models (P_GALAXY) (stat.fit.goodness)
  zphotG   [0.02/1.5] Galaxy photo-z (PHOTOZ_GALAXY) (src.redshift.phot)
  z1G   [0.01/1.5] Lower limit of galaxy photo-z (Z1_GALAXY) (src.redshift.phot;stat.min)
  z2G  (n) [0.03/1.5] Upper limit of galaxy photo-z (Z2_GALAXY) (src.redshift.phot;stat.max)
  PzG   [5e-7/1] Probability of galaxy photo-z locating within (z1G, z2G), described in Equation (7) (P_GALAXY_Z) (stat.fit.goodness)
  Pstar   [5e-17/0.5] PStar, skewt-QSO probability fitting to star models (P_STAR) (stat.fit.goodness)
  zsp  (n) [0.0038/6.9] Spectroscopic redshift (Z_SPEC) (src.redshift)
  Catzsp (char) Spectroscopic redshift catalog, i.e., SDSS, Milliquas, or LAMOST (Z_SPEC_CAT) (meta.id)
  Clsp (char) Spectroscopic classification (i.e. 84978 "QSO", 2261 "Galaxy" and 618 "Star") (CLASS_SPEC) (meta.code.class;src.class)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  
elapse time 0