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

  
VII/279
  SDSS quasar catalog: twelfth data release (Paris+, 2017)
ReadMe+ftp
2017A&A...597A..79P
Similar Catalogs
Post annotation 		img(gal)
1.VII/279/dr12qSDSS-DR12 Quasar Catalog (297301 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) SDSS-DR12 designation HHMMSS.ss+DDMMSS.s (J2000) corrected by CDS (SDSS_NAMEc) (Note G1)   (meta.id;meta.main)
  SDSSo (char) SDSS-DR12 designation HHMMSS.ss+DDMMSS.s (J2000) (SDSS_NAME) (Note G1)   (meta.id)
  RAJ2000 deg (i) Right Ascension (J2000) (RA) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination (J2000) (DEC) (pos.eq.dec;meta.main)
  THINGID  (i) Thing_ID (unique identifier of SDSS sources) (THING_ID) (meta.id)
  Plate  Spectroscopic Plate number (PLATE) (obs.field)
  MJD  Spectroscopic MJD (MJD) (time.epoch)
  Fiber  Spectroscopic Fiber number (FIBERID) (phot.mag;em.opt.I)
  z.v  Redshift from visual inspection (Z_VI) (src.redshift;pos.heliocentric)
  z.b  (n) Redshift from BOSS pipeline (Z_PIPE) (src.redshift;pos.heliocentric)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_z.b  (n) []? Error on BOSS pipeline redshift (error codes -4, -5, -6) (ERR_ZPIPE) (stat.error;src.redshift)
  f_z.b  ZWARNING flag (ZWARNING) (Note G3)   (meta.code)
  z.PCA  Refined PCA redshift (Z_PCA) (Note G4)   (src.redshift;pos.heliocentric)
  e_z.PCA  (n) Error on refined PCA redshift (ERR_ZPCA) (stat.error;src.redshift)
  qCont  Estimator of the PCA continuum quality (PCA_QUAL) (meta.code.qual)
  zCIV  Redshift of CIV emission line (Z_CIV) (src.redshift;pos.heliocentric)
  zCIII  Redshift of C iii] emission complex (Z_CIII) (src.redshift;pos.heliocentric)
  zMgII  Redshift of Mg ii emission line (Z_MGII) (src.redshift;pos.heliocentric)
  Morph  SDSS morphology flag 0=point source 1=extended (SDSS_MORPHO) (src.class.starGalaxy)
  Btarg1  BOSS target flag for main survey (BOSS_TARGET1) (G5) (edited in hexadecimal) (Note)   (meta.id)
  Atarg1  BOSS target flag for ancillary programs (ANCILLARY_TARGET1) (G5) (edited in hexadecimal) (Note)   (meta.id)
  Atarg2  BOSS target flag for ancillary programs (ANCILLARY_TARGET2) (Note G5)   (meta.id)
  eBtarg0  Target selection flag for the SDSS-IV/eBOSS pilot survey (EBOSS_TARGET0) (meta.id)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  NspBOSS  Number of additional spectra available in SDSS-III/BOSS (NSPEC_BOSS) (meta.number)
  f7   [0/1] 1 if the quasar is known from DR7 (SDSS_DR7) (meta.code)
  Plate7  (n) SDSS-DR7 spectroscopic Plate number if the quasar is known from DR7 (PLATE_DR7) (obs.field)
  MJD7  (n) SDSS-DR7 spectroscopic MJD if the quasar is known from DR7 (MJD_DR7) (time.epoch)
  Fiber7  (n) SDSS-DR7 spectroscopic Fiber number if the quasar is known from DR7 (FIBERID_DR7) (phot.mag;em.opt.I)
  US   [0/2] Uniform sample flag (UNIFORM) (Note G6)   (meta.code)
  alphanu  Spectral index measurement (ALPHA_NU) (spect.index)
  SNRSpec  Median signal-to-noise ratio over the whole spectrum (SNR_SPEC) (stat.snr)
  SNR1700  Median signal-to-noise ratio in the window 1650-1750Å (rest frame) (SNR_1700) (stat.snr)
  SNR3000  Median signal-to-noise ratio in the window 2950-3050Å (rest frame) (SNR_3000) (stat.snr)
  SNR5150  Median signal-to-noise ratio in the window 5100-5250Å (rest frame) (SNR_5150) (stat.snr)
  FW(CIV) km/s (n) FWHM of CIV emission line (FWHM_CIV) (spect.line.width)
  HW(CIV)b km/s (n) Blue HWHM of CIV emission line (BHWHM_CIV) (spect.line.width)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  HW(CIV)r km/s (n) Red HWHM of CIV emission line (RHWHM_CIV) (spect.line.width)
  A(CIV)  Amplitude of CIV emission line in units of median rms pixel noise (AMP_CIV) (phot.flux.density;arith.ratio)
  W(CIV) 0.1nm (n) Rest frame equivalent width of CIV emission line in Å (REWE_CIV) (spect.line.eqWidth)
  e_W(CIV) 0.1nm (n) Uncertainty on the rest frame equivalent width of CIV emission line (ERRREWECIV) (stat.error)
  FW(CIII) km/s (n) FWHM of CIII] emission complex (FWHM_CIII) (spect.line.width)
  HW(CIII)b km/s (n) Blue HWHM of CIII] emission line (BHWHM_CIII) (spect.line.width)
  HW(CIII)r km/s (n) Red HWHM of CIII] emission line (RHWHM_CIII) (spect.line.width)
  A(CIII)  Amplitude of CIII] emission complex in units of median rms pixel noise (AMP_CIII) (phot.flux.density;arith.ratio)
  W(CIII) 0.1nm (n) Rest frame equivalent width of CIII] emission line in Å (REWE_CIII) (spect.line.eqWidth)
  e_W(CIII) 0.1nm (n) Uncertainty on the rest frame equivalent width of CIII] emission complex (ERRREWECIII) (stat.error)
  FW(MgII) km/s (n) FWHM of MgII emission line (FWHM_MGII) (spect.line.width)
  HW(MgII)b km/s (n) Blue HWHM of MgII emission line (BHWHM_MGII) (spect.line.width)
  HW(MgII)r km/s (n) Red HWHM of MgII emission line (RHWHM_MGII) (spect.line.width)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  A(MgII)  Amplitude of MgII emission line in units of median rms pixel noise (AMP_MGII) (phot.flux.density;arith.ratio)
  W(MgII) 0.1nm (n) Rest frame equivalent width of MgII emission line (REWE_MGII) (spect.line.eqWidth)
  e_W(MgII) 0.1nm (n) Uncertainty on the rest frame equivalent width of MgII emission (ERRREWEMGII) (stat.error)
  BAL-VI   [0/1] BAL flag from visual inspection (BALFLAGVI) (meta.code)
  BI(CIVt) km/s (n) Balnicity index of CIV trough (BI_CIV) (spect.line.eqWidth)
  e_BI(CIVt) km/s (n) Error on the Balnicity index of CIV trough (ERRBICIV) (stat.error)
  AI(CIVt) km/s (n) Absorption index of CIV trough (AI_CIV) (spect.index)
  e_AI(CIVt) km/s (n) Error on the absorption index of CIV trough (ERRAICIV) (stat.error)
  Chi2CIVt  (n) χ2 of the trough from Eq. (3) in Paris et al. (2012, Cat. VII/269) (CHI2TROUGH) (stat.fit.chi2)
  N2t  Number of distinct CIV troughs of width larger than 2000km/s (NCIV_2000) (meta.number)
  Vmin2t km/s (n) Minimum velocity of the CIV troughs (VMINCIV2000) (spect.dopplerVeloc)
  Vmax2t km/s (n) Maximum velocity of the CIV troughs (VMAXCIV2000) (spect.dopplerVeloc)
  N.45t  Number of distinct CIV troughs of width larger than 450km/s (NCIV_450) (meta.number)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Vmin.45t km/s (n) Minimum velocity of the CIV troughs (VMINCIV450) (spect.dopplerVeloc)
  Vmax.45t km/s (n) Maximum velocity of the CIV troughs (VMAXCIV450) (spect.dopplerVeloc)
  W(SiIVt) 0.1nm (n) Rest frame equivalent width of the Si iv trough (REW_SIIV) (spect.line.eqWidth)
  W(CIVt) 0.1nm (n) Rest frame equivalent width of the CIV trough (REW_CIV) (spect.line.eqWidth)
  W(AlIIIt) 0.1nm (n) Rest frame equivalent width of the AlIII] trough (REW_ALIII) (spect.line.eqWidth)
  RUN  SDSS Imaging Run Number of photometric measurements (RUN_NUMBER) (meta.number)
  Ph-MJD  Modified Julian Date of imaging observation (PHOTO_MJD) (time.epoch)
  Rerun (char) SDSS Photometric Processing Rerun Number (RERUN_NUMBER) (meta.id)
  Colcam  (n) [1/6] SDSS Camera Column Number (COL_NUMBER) (meta.id)
  Field  SDSS Field Number (FIELD_NUMBER) (phot.mag;em.opt.I)
  objID (char) SDSS Object Identification Number (OBJ_ID) (meta.id)
  Fu 3.63uJy (n) PSF flux in u band (not corrected for Galactic extinction) in nnomggies (PSFFLUXu) (Note G2)   (phot.mag;em.opt.U)
  Fg 3.63uJy (n) PSF flux in g band (not corrected for Galactic extinction) in nnomggies (PSFFLUXg) (Note G2)   (phot.mag;em.opt.B)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Fr 3.63uJy (n) PSF flux in r band (not corrected for Galactic extinction) in nnomggies (PSFFLUXr) (Note G2)   (phot.mag;em.opt.R)
  Fi 3.63uJy (n) PSF flux in i band (not corrected for Galactic extinction) in nnomggies (PSFFLUXi) (Note G2)   (phot.mag;em.opt.I)
  Fz 3.63uJy (n) PSF flux in z band (not corrected for Galactic extinction) in nnomggies (PSFFLUXz) (Note G2)   (phot.mag;em.opt.I)
  IVFu 3.63uJy Inverse variance of of PSF flux in u band in nnomggies (IVAR_PSFFLUXu) (Note G2)   (phot.mag;em.opt.U)
  IVFg 3.63uJy Inverse variance of of PSF flux in g band in nnomggies (IVAR_PSFFLUXg) (Note G2)   (phot.mag;em.opt.B)
  IVFr 3.63uJy Inverse variance of of PSF flux in r band in nnomggies (IVAR_PSFFLUXr) (Note G2)   (phot.mag;em.opt.R)
  IVFi 3.63uJy Inverse variance of of PSF flux in i band in nnomggies (IVAR_PSFFLUXi) (Note G2)   (phot.mag;em.opt.I)
  IVFz 3.63uJy Inverse variance of of PSF flux in z band in nnomggies (G2) (IVAR_PSFFLUXz) (phot.mag;em.opt.I)
  umag mag (n) PSF magnitude in u band (not corrected for Galactic extinction) (PSFMAGu) (phot.mag;em.opt.U)
  gmag mag (n) PSF magnitude in g band (not corrected for Galactic extinction) (PSFMAGg) (phot.mag;em.opt.B)
  rmag mag (n) PSF magnitude in r band (not corrected for Galactic extinction) (PSFMAGr) (phot.mag;em.opt.R)
  imag mag (n) PSF magnitude in i band (not corrected for Galactic extinction) (PSFMAGi) (phot.mag;em.opt.I)
  zmag mag (n) PSF magnitude in z band (not corrected for Galactic extinction) (phot.mag;em.opt.I)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_umag mag (n) error in PSF magnitude in u band (ERR_PSFMAGu) (stat.error;phot.mag;em.opt.U)
  e_gmag mag (n) error in PSF magnitude in g band (ERR_PSFMAGg) (stat.error;phot.mag;em.opt.B)
  e_rmag mag (n) error in PSF magnitude in r band (ERR_PSFMAGr) (stat.error;phot.mag;em.opt.R)
  e_imag mag (n) error in PSF magnitude in i band (ERR_PSFMAGi) (stat.error;phot.mag;em.opt.I)
  e_zmag mag (n) error in PSF magnitude in z band (ERR_PSFMAGz) (stat.error;phot.mag;em.opt.I)
  Fut 3.63uJy (n) Target flux in the u band (not corrected for Galactic extinction) in nnomggies (G2) (TARGET_FLUXu) (phot.mag;em.opt.U)
  Fgt 3.63uJy (n) Target flux in the g band (not corrected for Galactic extinction) in nnomggies (G2) (TARGET_FLUXg) (phot.mag;em.opt.B)
  Frt 3.63uJy (n) Target flux in the r band (not corrected for Galactic extinction) in nnomggies (G2) (TARGET_FLUXr) (phot.mag;em.opt.R)
  Fit 3.63uJy (n) Target flux in the i band (not corrected for Galactic extinction) in nnomggies (G2) (TARGET_FLUXi) (phot.mag;em.opt.I)
  Fzt 3.63uJy (n) Target flux in the z band (not corrected for Galactic extinction) in nnomggies (G2) (TARGET_FLUXz) (phot.mag;em.opt.I)
  iMAG mag (n) Absolute i magnitude (Note 1)   (phys.magAbs)
  D(g-i) mag (n) Δ(g-i)=(g-i)-<(g-i)>redshift (Galactic extinction corrected) (DGMI) (Note G7)   (phot.color;arith.diff)
  Extu mag (n) Galactic extinction in u band (EXTINCTIONu) (Note G8)   (phys.absorption)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Extg mag (n) Galactic extinction in g band (EXTINCTIONg) (Note G8)   (phys.absorption)
  Extr mag (n) Galactic extinction in r band (EXTINCTIONr) (Note G8)   (phys.absorption)
  Exti mag (n) Galactic extinction in i band (EXTINCTIONi) (Note G8)   (phys.absorption)
  Extz mag (n) Galactic extinction in z band (EXTINCTIONz) (Note G8)   (phys.absorption)
  ExtuR mag Recalculated Galactic extinction in u (EXTINCTION_RECALu) (Note G9)   (phys.absorption)
  ExtgR mag Recalculated Galactic extinction in g (EXTINCTION_RECALg) (Note G9)   (phys.absorption)
  ExtrR mag Recalculated Galactic extinction in r (EXTINCTION_RECALr) (Note G9)   (phys.absorption)
  ExtiR mag Recalculated Galactic extinction in i (EXTINCTION_RECALi) (Note G9)   (phys.absorption)
  ExtzR mag Recalculated Galactic extinction in z (EXTINCTION_RECALz) (Note G9)   (phys.absorption)
  logNHI [cm-2] logarithm of Galactic HI column density (HI_GAL) (phys.columnDensity;pos.galactic)
  Varmatch  Flag for variability information (0 if not available) (VAR_MATCHED) (meta.code)
  Varchi2  Reduced χ2 when the light curve is fit with a constant (VAR_CHI2) (stat.fit.chi2)
  VarA  Structure function parameter A as defined in Palanque-Delabrouille et al. (2011A&A...530A.122P) (VAR_A) (stat.fit.param)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Vargamma - Structure function parameter γ as defined in Palanque-Delabrouille et al. (2011A&A...530A.122P) (VAR_GAMMA) (stat.fit.param)
  logXct [ct/s] log RASS full band count rate (RASS_COUNTS) (phot.count;em.X-ray)
  SNR(X)  S/N of the RASS count rate (RASSCOUNTSSNR) (stat.snr)
  sepX arcsec SDSS-RASS separation in arcsec (SDSS2ROSAT_SEP) (pos;arith.diff)
  NDetX  Number of detections in XMM-Newton (NDETECTIONXMM) (meta.number)
  F0.2-12 mW/m2 Total flux (0.2-12keV) from XMM-Newton computed from the longest observation FLUX0212KEVSGL) (phot.flux;em.X-ray)
  e_F0.2-12 mW/m2 Error in total flux (0.2-12keV) from XMM-NewtonRFLUX0212KEV_SGL) (stat.error)
  F0.2-2 mW/m2 Soft (0.2-2keV) X-ray flux from XMM-Newton (FLUX02_2KEV) (phot.flux;em.X-ray)
  e_F0.2-2 mW/m2 Error in soft (0.2-2keV) X-ray flux from XMM-Newton (ERRFLUX022KEV) (stat.error)
  F4.5-12 mW/m2 Hard (4.5-12keV) X-ray flux from XMM-Newton (FLUX2_12KEV) (phot.flux;em.X-ray)
  e_F4.5-12 mW/m2 Error in hard (4.5-12keV) X-ray flux from XMM-Newton (ERRFLUX212KEV) (stat.error)
  F0.2-12W mW/m2 Total weighted average flux (0.2-12keV) from XMM-Newton (FLUX02_12KEV) (phot.flux;em.X-ray)
  e_F0.2-12W mW/m2 Error in total flux (0.2-12keV) from XMM-Newton (ERRFLUX0212KEV) (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  L0.2-12 10-7W Total X-ray luminosity (0.2-12keV) from XMM-Newton using the longest observation (LUM022KEVSGL) (Note 2)   (phys.luminosity;em.X-ray)
  L0.5-2 10-7W Soft (0.2-2keV) X-ray luminosity from XMM-Newton (LUM05_2KEV) (Note 2)   (phys.luminosity;em.X-ray)
  L4.5-12 10-7W Hard (4.5-12keV) X-ray luminosity from XMM-Newton (LUM2_12KEV) (Note 2)   (phys.luminosity;em.X-ray)
  L0.2-2W 10-7W Total X-ray luminosity (0.2-12keV) from XMM-Newton using weighted average flux (LUM02_2KEV) (Note 2)   (phys.luminosity;em.X-ray)
  f_F4.5-12  (n) [0/1] Flag for upper limit of hard X-ray flux (LUMX210UPPER) (meta.code)
  sepXM arcsec (n) SDSS-XMM-Newton separation in arcsec (SDSS2XMM_SEP) (pos;arith.diff)
  GALEX  GALEX match (GALEX_MATCHED) (meta.code)
  FFUV 3.63uJy (n) FUV flux (GALEX) (FUV) (phot.flux;em.UV)
  IVFUV 3.63uJy-2(n) Inverse variance of FUV flux (in nnomggies–2) (FUV_IVAR) (phot.flux;em.UV)
  FNUV 3.63uJy (n) NUV flux (GALEX) (NUV) (phot.flux;em.UV)
  IVNUV 3.63uJy-2(n) Inverse variance of NUV flux (in nnomggies–2) (NUV_IVAR) (phot.flux;em.UV)
  Jmag mag (n) 2MASS J magnitude (Vega) (JMAG) (phot.mag;em.IR.J)
  e_Jmag mag (n) Error in J magnitude (Vega) (ERR_JMAG) (stat.error;phot.mag;em.IR.J)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  SNR(J)  (n) J-band S/N (JSNR) (stat.snr)
  f_Jmag  (n) J-band photometry flag (JRDFLAG) (meta.code)
  Hmag mag (n) 2MASS H magnitude (Vega) (HMAG) (phot.mag;em.IR.H)
  e_Hmag mag (n) Error in H magnitude (ERR_HMAG) (stat.error;phot.mag;em.IR.H)
  SNR(H)  (n) H-band S/N (HSNR) (stat.snr)
  f_Hmag  (n) H-band photometry flag (HRDFLAG) (meta.code)
  Kmag mag (n) 2MASS K magnitude (Vega) (KMAG) (phot.mag;em.IR.K)
  e_Kmag mag (n) Error in K magnitude (ERR_KMAG) (stat.error;phot.mag;em.IR.K)
  SNR(K)  (n) K-band S/N (KSNR) (stat.snr)
  f_Kmag  (n) K-band photometry flag (KRDFLAG) (meta.code)
  Sep2 arcsec (n) SDSS-2MASS separation in arcsec (SDSS2MASS_SEP) (pos.angDistance)
  W1mag mag (n) WISE W1 magnitude (Vega) (W1MAG) (phot.mag;em.IR.3-4um)
  e_W1mag mag (n) Error in W1 magnitude (ERR_W1MAG) (stat.error;phot.mag)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  W1SNR  (n) S/N in W1 band (W1SNR) (stat.snr)
  W1chi2  (n) χ2 in W1 band (W1CHI2) (stat.fit.chi2)
  W2mag mag (n) WISE W2 magnitude (Vega) (W2MAG) (phot.mag;em.IR.4-8um)
  e_W2mag mag (n) Error in W2 magnitude (ERR_W2MAG) (stat.error;phot.mag)
  W2SNR  (n) S/N in W2 band (W2SNR) (stat.snr)
  W2chi2  (n) χ2 in W2 band (W2CHI2) (stat.fit.chi2)
  W3mag mag (n) WISE W3 magnitude (Vega) (W3MAG) (phot.flux.density;em.IR.8-15um)
  e_W3mag mag (n) Error in W3 magnitude (ERR_W3MAG) (stat.error;phot.mag)
  W3SNR  (n) S/N in W3 band (W3SNR) (stat.snr)
  W3chi2  (n) χ2 in W3 band (W3CHI2) (stat.fit.chi2)
  W4mag mag (n) WISE W4 magnitude (Vega) (W4MAG) (phot.flux.density;em.IR.8-15um)
  e_W4mag mag (n) Error in W4 magnitude (ERR_W4MAG) (stat.error;phot.mag)
  W4SNR  S/N in W4 band (W4SNR) (stat.snr)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  W4chi2  χ2 in W4 band (W4CHI2) (stat.fit.chi2)
  CCflags (char) WISE contamination and confusion flag (CC_FLAGS) (meta.code)
  PHflag (char) WISE photometric quality flag (PH_FLAG) (meta.code.qual;phot)
  sepW arcsec SDSS-WISE separation in arcsec (SDSS2WISE_SEP) (pos;arith.diff)
  UKIDSS  UKIDSS Matched (UKIDSS_MATCHED) (meta.code)
  FY W/m2/Hz Y-band flux density from UKIDSS (YFLUX) (phot.flux.density;em.IR)
  e_FY W/m2/Hz (n) Error in Y-band density flux from UKIDSS (YFLUX_ERR) (stat.error)
  FJ W/m2/Hz (n) J-band flux density from UKIDSS (JFLUX) (phot.flux.density;em.IR.J)
  e_FJ W/m2/Hz (n) Error in J-band flux density from UKIDSS (JFLUX_ERR) (stat.error)
  FH W/m2/Hz (n) H-band flux density from UKIDSS (HFLUX) (phot.flux.density;em.IR.H)
  e_FH W/m2/Hz (n) Error in H-band flux density from UKIDSS (HFLUX_ERR) (stat.error)
  FK W/m2/Hz (n) K-band flux density from UKIDSS (KFLUX) (phot.mag;em.IR.K)
  e_FK W/m2/Hz (n) Error in K-band flux density from UKIDSS (KFLUX_ERR) (stat.error)
  FIRST  FIRST matched (FIRST_MATCHED) (meta.code)
  F1p mJy (n) FIRST peak flux density at 20 cm expressed in mJy (FIRST_FLUX) (phot.flux.density;em.radio.750-1500MHz)
  SNR(1)  (n) S/N of the FIRST flux density (FIRST_SNR) (stat.snr)
  sep1 arcsec (n) SDSS-FIRST separation in arcsec (SDSS2FIRST_SEP) (pos;arith.diff)
  DR12  Display the SDSS data for this quasar (meta.ref.url)
  DR7  Display the SDSS-DR7 data for this quasar (meta.ref.url)
  SimbadName (char) Designation understandable by the Simbad data-base (meta.id)

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