VizieR

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VizieR

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VII/260/dr7qso The SDSS-DR7 quasar catalog (Schneider+, 2010)
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The SDSS quasar catalog V, DR7 (table2 of the paper) (105783 rows) 		  recno=31430
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ColumnValue  Explain   (UCD)
_RAJ200009 49 54.4881 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+51 48 00.929 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195009 46 34.3920 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+52 02 01.669 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon164.2152205 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+48.1509709 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
31430recno 31430  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
SDSS094954.48+514800.9  SDSS DR7 object designation (1) (linked to details from SDSS site) (Note)   (meta.id;meta.main)
z 1.6496  SDSS redshift (src.redshift)
umag 19.522 mag BEST SDSS u band PSF magnitude (Note 2)   (phot.mag;em.opt.U)
e_umag 0.032 mag Error in umag (stat.error;phot.mag;em.opt.U)
gmag 19.376 mag BEST SDSS g band PSF magnitude (Note 2)   (phot.mag;em.opt.B)
e_gmag 0.021 mag Error in gmag (stat.error;phot.mag;em.opt.B)
rmag 19.323 mag BEST SDSS r band PSF magnitude (Note 2)   (phot.mag;em.opt.R)
e_rmag 0.018 mag Error in rmag (stat.error;phot.mag;em.opt.R)
imag 19.018 mag BEST SDSS i band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
e_imag 0.018 mag Error in imag (stat.error;phot.mag;em.opt.I)
zmag 19.092 mag BEST SDSS z band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
e_zmag 0.042 mag Error in zmag (stat.error;phot.mag;em.opt.I)
Au 0.039 mag Galactic extinction in u filter (Note 3)   (phys.absorption)
logHI 19.959 [cm-2] Log of Galactic HI column density (phys.columnDensity;pos.galactic)
F20cm  mag FIRST 20cm peak flux density (Note 4)   (phot.flux.density;em.radio.750-1500MHz)
w_F20cm 0.000  Signal-to-Noise ratio for F20cm (stat.weight)
sepR 0.000 arcsec SDSS/FIRST separation (pos;arith.diff)
logX  [ct/s] RASS BSC/FSC full band count rate (Note 5)   (phot.count;em.X-ray)
w_logX 0.000  Signal-to-Noise ratio for logX (stat.weight)
sepX 0.000 arcsec SDSS/RASS separation (pos;arith.diff)
Jmag 17.198 mag 2MASS J band magnitude (Note 6)   (phot.mag;em.IR.J)
e_Jmag 0.272 mag Error in Jmag (stat.error;phot.mag;em.IR.J)
Hmag  mag 2MASS H band magnitude (Note 6)   (phot.mag;em.IR.H)
e_Hmag  mag Error in Hmag (stat.error;phot.mag;em.IR.H)
Kmag  mag 2MASS KS band magnitude (Note 6)   (phot.mag;em.IR.K)
e_Kmag  mag Error in Kmag (stat.error;phot.mag;em.IR.K)
sepIR 0.000 arcsec SDSS/2MASS separation (pos;arith.diff)
f2M 18   [0/26] 2MASS flags (Note 7)   (meta.code.error)
iMAG -25.912 mag Absolute SDSS i band magnitude (Note 8)   (phys.magAbs;em.opt.I)
D(g-i) 0.111 mag Offset of quasar (g-i) from distribution (g-i) mode (Note 9)   (stat.fit.residual)
Mph 0   [0/1] Morphology flag (1=extended source) (src.class.starGalaxy)
S1 1   [0/1] SCIENCEPRIMARY flag (1=SCIENCEPRIMARY) (meta.code)
mode 1   [0/3] SDSS MODE flag for blends, overlapping scans (Note 10)   (meta.code.class)
utf 1   [0/1] Uniform target selection flag (Note 11)   (meta.code)
TflagB00100003  BEST target selection flag (hexadecimal) (meta.code)
Lz 1   [0/1] Low-z Quasar, color selection only, target flag (1=targeted as Low-z Quasar) (meta.code)
Hz 1   [0/1] High-z Quasar, color selection only, target flag (1=targeted as High-z Quasar) (meta.code)
fR 0   [0/1] FIRST target flag (1=targeted) (meta.code)
fX 0   [0/1] ROSAT target flag (1=targeted) (meta.code)
fS 1   [0/1] Serendipity target flag (1=targeted) (meta.code)
f* 0   [0/1] Star target flag (1=targeted) (meta.code)
fG 0   [0/1] Galaxy target flag (1=targeted) (meta.code)
run 2735  SDSS imaging run number for photometric measurements (meta.id)
MJD-im 52233 d Modified Julian Date of imaging observation (time.epoch)
MJD-sp 52409 d Modified Julian Date of spectroscopic observation (time.epoch)
Plate 902  Spectroscopic Plate number (meta.id;instr.plate)
Fiber 499  Spectroscopic Fiber number (meta.id)
rerun 40  SDSS Photometric Processing Rerun number (meta.id)
Cam 5   [1/6] SDSS Camera Column number (meta.id;instr)
Frame 38  SDSS Frame number (obs.field)
obj 48  SDSS Object number (meta.id)
Tflag00100003  TARGET target selection flag (hexadecimal) (meta.code)
LzT 1   [0/1] Low-z Quasar, color selection only, target flag (1=targeted as Low-z Quasar) (meta.code)
HzT 1   [0/1] High-z Quasar, color selection only, target flag (1=targeted as High-z Quasar) (meta.code)
fRT 0   [0/1] FIRST target flag (1=targeted) (meta.code)
fXT 0   [0/1] ROSAT target flag (1=targeted) (meta.code)
fST 1   [0/1] Serendipity target flag (1=targeted) (meta.code)
f*T 0   [0/1] Star target flag (1=targeted) (meta.code)
fGT 0   [0/1] Galaxy target flag (1=targeted) (meta.code)
uTmag 19.495 mag TARGET SDSS u band PSF magnitude (Note 2)   (phot.mag;em.opt.U)
e_uTmag 0.026 mag Error in uTmag (stat.error;phot.mag)
gTmag 19.317 mag TARGET SDSS g band PSF magnitude (Note 2)   (phot.mag;em.opt.B)
e_gTmag 0.017 mag Error in gTmag (stat.error;phot.mag)
rTmag 19.327 mag TARGET SDSS r band PSF magnitude (Note 2)   (phot.mag;em.opt.R)
e_rTmag 0.013 mag Error in rTmag (stat.error;phot.mag)
iTmag 19.020 mag TARGET SDSS i band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
e_iTmag 0.014 mag Error in iTmag (stat.error;phot.mag)
zTmag 19.064 mag TARGET SDSS z band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
e_zTmag 0.038 mag Error in zTmag (stat.error;phot.mag)
prevIDSDSS J094954.48+514800.9  Previously published name (Note 12)   (meta.id)
BHBH  Display the black hole mass estimates from Shen et al. 2008, Cat. J/ApJ/680/169 (meta.ref.url)
DR7DR7  Display the detailed photometry from SDSS-DR7 (Cat. II/294) (meta.ref.url)
2MASS2MASS  Display the 2MASS data (meta.ref.url)
XX  Display the X-ray sources closer than 1' (meta.ref.url)
RadioRadio  Display the radio sources closer than 1' (meta.ref.url)
RAJ2000147.47703 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
DEJ2000+51.80026 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  
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