VizieR

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VizieR

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J/A+A/522/A88/table7 Photometric identification of BHB stars (Smith+, 2010)
Catalogue of SDSS BHB candidates (294652 rows)
  recno=254883
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200020 24 52.18047 "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+14 48 07.1270 "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)
_RAB195020 22 32.60382 "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+14 38 19.1928 "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)
_Glon057.30704372 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-12.98247921 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)
254883recno 254883  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

ObjID758877495580756308  SDSS ObjID from PhotoObj table (meta.id)
plate2257   SDSS plate from specObj table when available (obs.field)
MJD53612   SDSS MJD from specObj table when available (time.epoch)
fiber414   SDSS fiber from specObj table when available (meta.note)
umag21.450 mag SDSS u-band psf magnitude (phot.mag;em.opt.U)
e_umag 0.128 mag SDSS u-band magnitude error (stat.error;phot.mag;em.opt.U)
gmag20.470 mag SDSS g-band psf magnitude (phot.mag;em.opt.B)
e_gmag 0.052 mag SDSS g-band magnitude error (stat.error;phot.mag;em.opt.B)
rmag20.516 mag SDSS r-band psf magnitude (phot.mag;em.opt.R)
e_rmag 0.035 mag SDSS r-band magnitude error (stat.error;phot.mag;em.opt.R)
imag20.634 mag SDSS i-band psf magnitude (phot.mag;em.opt.I)
e_imag 0.065 mag SDSS i-band magnitude error (stat.error;phot.mag;em.opt.I)
zmag20.609 mag SDSS z-band psf magnitude (phot.mag;em.opt.I)
e_zmag 0.228 mag SDSS z-band magnitude error (stat.error;phot.mag;em.opt.I)
uext 0.560 mag u-band extinction from SDSS pipeline (Note 2)   (phys.absorption)
gext 0.412 mag g-band extinction from SDSS pipeline (Note 2)   (phys.absorption)
rext 0.299 mag r-band extinction from SDSS pipeline (Note 2)   (phys.absorption)
iext 0.226 mag i-band extinction from SDSS pipeline (Note 2)   (phys.absorption)
zext 0.161 mag z-band extinction from SDSS pipeline (Note 2)   (phys.absorption)
TypeBS  Object category, from Xue et al., 2008ApJ...684.1143X (Note 3)   (src.class)
Psvm 0.0941  Probability of BHB from SVM (support vector machine) model (Note 4)   (stat.fit.goodness)
e_Psvm 0.1851  Standard deviation of Psvm for 10 trials (Note 4)   (stat.stdev)
Prior 0.1007  2d prior applied to probability. (stat.fit.param)
modP 0.01149  Psvm probability modified by prior (Note 5)   (stat.fit.goodness)
Dist 80.28 kpc Estimated distance in kpc (Note 6)   (pos.distance;pos.heliocentric)
e_Dist 0.0407  Fractional (relative) error on the distance (stat.error)

SDSSSDSS  Display the SDSS data for this quasar (meta.ref.url)
DR7DR7  Details from the SDSS-DR7 Photometric Catalog (Cat. II/294) (meta.ref.url)

RAJ2000306.217419 deg (i) Right ascension in decimal degrees (J2000.0) (Note 1)   (pos.eq.ra;meta.main)
DEJ2000+14.801980 deg (i) Declination in decimal degrees (J2000.0) (Note 1)   (pos.eq.dec;meta.main)
  
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