VizieR

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VizieR

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J/ApJS/219/39/cand QSOs selection from SDSS and WISE (Richards+, 2015)
*Optical+MIR photometric quasar candidates catalog (table 2) (885503 rows)
  recno=74207
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ColumnValue  Explain   (UCD)
_RAJ200001 21 56.85840 "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+04 22 24.8450 "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)
_RAB195001 19 21.38633 "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+04 06 44.2132 "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)
_Glon137.25055813 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-57.64751456 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)
74207recno 74207  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000020.486910 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+04.373568 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
ClassU  Spectral classification (QSO, GALAXY, STAR, CELG, ??, or U) (Note 1)   (src.class)
zsp    [0/6.7] Spectroscopic redshift (src.redshift)
umag20.500 mag [15/31.7] SDSS u-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.U)
e_umag 0.072 mag [0.003/99.99] Error on u-band magnitude (stat.error;phot.mag;em.opt.U)
gmag19.914 mag [15/27.4] SDSS g-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.B)
e_gmag 0.028 mag [0.003/44] Error on g-band magnitude (stat.error;phot.mag;em.opt.B)
rmag19.933 mag [15/25.9] SDSS r-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.R)
e_rmag 0.021 mag [0.002/18] Error on r-band magnitude (stat.error;phot.mag;em.opt.R)
imag19.640 mag [14.9/25] SDSS i-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.I)
e_imag 0.032 mag [0.002/21] Error on i-band magnitude (stat.error;phot.mag;em.opt.I)
zmag19.516 mag [15/24.5] SDSS z-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.I)
e_zmag 0.069 mag [0.003/16] Error on z-band magnitude (stat.error;phot.mag;em.opt.I)
3.6mag16.980 mag [12.8/23.8] 3.6um AB magnitude, corrected for Galactic extinction (phot.mag;em.IR.3-4um)
e_3.6mag 0.028 mag [0.02/0.7] Error on 3.6um magnitude (stat.error)
4.5mag16.576 mag [12.5/24.2] 4.5um AB magnitude, corrected for Galactic extinction (phot.mag;em.IR.4-8um)
e_4.5mag 0.028 mag [0.01/0.7] Error on 4.5um magnitude (stat.error)
Fu 5.46 3.63uJy [-101/810] SDSS u-band flux density in nanomaggies (phot.mag;em.opt.U)
e_Fu 0.36 3.63uJy [0.04/100] Error in u-band flux density (stat.error)
Fg 9.67 3.63uJy [-1/759] SDSS g-band flux density in nanomaggies (phot.mag;em.opt.B)
e_Fg 0.25 3.63uJy [0.02/54] Error in g-band flux density (stat.error)
Fr 9.84 3.63uJy [-0.3/805] SDSS r-band flux density in nanomaggies (phot.mag;em.opt.R)
e_Fr 0.19 3.63uJy [0.03/86] Error in r-band flux density (stat.error)
Fi 13.15 3.63uJy [-0.3/979] SDSS i-band flux density in nanomaggies (phot.mag;em.opt.I)
e_Fi 0.38 3.63uJy [0.04/163] Error in i-band flux density (stat.error)
Fz 14.93 3.63uJy [-4/945] SDSS z-band flux density in nanomaggies (phot.mag;em.opt.I)
e_Fz 0.96 3.63uJy [0.1/129] Error in z-band flux density (stat.error)
F3.6 582.37 uJy [1.1/25966] 3.6um flux density in microJy (phot.mag;em.IR.3-4um)
e_F3.6 15.02 uJy [0.09/551] Error in 3.6um flux density (stat.error)
F4.5 844.89 uJy [0.8/35613] 4.5um flux density in microJy (phot.mag;em.IR.4-8um)
e_F4.5 21.79 uJy [0.1/656] Error in 4.5um flux density (stat.error)
Ymag17.694 mag [14.6/26] Y-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.J)
e_Ymag 0.019 mag [0.003/46] Error in Y-band magnitude (stat.error;phot.mag;em.opt.B)
Jmag17.640 mag [13.9/21] J-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.J)
e_Jmag 0.026 mag [0.002/0.5] Error in J-band magnitude (stat.error;phot.mag;em.IR.J)
Hmag16.750 mag [13.2/20.3] H-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.H)
e_Hmag 0.031 mag [0.002/0.6] Error in H-band magnitude (stat.error;phot.mag;em.IR.H)
Kmag15.795 mag [11.8/19.6] K-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.K)
e_Kmag 0.019 mag [0.001/0.7] Error in K-band magnitude (stat.error;phot.mag;em.IR.K)
FUV  mag [13.7/24.8] GALEX FUV magnitude (AB) (phot.mag;em.UV.100-200nm)
e_FUV  mag [0.008/0.6] Error in FUV magnitude (stat.error)
NUV  mag [13.8/24.8] GALEX NUV magnitude (AB) (phot.mag;em.UV)
e_NUV  mag [0.004/0.5] Error in NUV magnitude (stat.error)
gisig-0.7   [-1/1] Indicator of distance from mean g-i color at ZHOTBEST (GI_SIGMA) (stat.fit.param)
Au 0.19 mag [0.01/1] Extinction in SDSS u band (phys.absorption)
den* 0.00   [0/1.2] Star density from KDE algorithm (stat.fit.param)
denq 0.03   [0/402] Quasar density from KDE algorithm (stat.fit.param)
b_zphO 0.420   [0/100] Minimum photometric redshift [ugriz] (src.redshift.phot;stat.min)
zphO 0.545   [0.005/100] Best photometric redshift [ugriz] (ZPHOTBEST) (src.redshift.phot)
B_zphO 0.710   [0.01/100] Maximum photometric redshift [ugriz] (src.redshift.phot;stat.max)
zphOP 0.963   [0.005/100] Probability of ZPHOTBEST being between min and max (ZPHOTPROB) (stat.fit.goodness)
b_zphIR 0.45   [0/6] Minimum photometric redshift [ugrizJHK] (src.redshift.phot;stat.min)
zphIR 0.85   [0.05/6.3] Best photometric redshift (ugrizJHK) (ZPHOTBESTJHK) (src.redshift.phot)
B_zphIR 0.575   [0.02/6.3] Maximum photometric redshift (ugrizJHK) (ZPHOTMAXJHK) (src.redshift.phot;stat.max)
zphIRP 0.99   [0.2/1] Probability of ZPHOTBESTJHK being between min and max (ZPHOTPROBJHK) (stat.fit.goodness)
Leg1   [0/1] Indicates if object is in the SDSS Legacy footprint (meta.code)
Uni0   [0/1] Indicates if object was selected according to Richards et al. (2002AJ....123.2945R) (meta.code)
Prim 0   [0/673192456] SDSS primary target selection flag; see Richards et al. (2002AJ....123.2945R) (meta.code)
pm  mas/yr [0.005/193] Proper motion in milliarcseconds per year (pos.pm)
DB1   [1/7] Bitwise flag indicating low-z (20), mid-z (21), and high-z (22) sources (meta.code)

SloanSloan  Display the online SDSS data for the nearest object (meta.ref.url)
  
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