TABLE  QsoTarget

Contains a record describing the attributes of each QSO Target object and also Target Surrogates to fill in the QsoConcordanceAll view.

This table is copied from the 'base' Target..PhotoObjAll Table. It has a row for each object flagged as a QSO (a candidate) and if no candidate exists nearby a Spec or Photo candidate then a 'surrogate' Target object is added -- the closest target within 1.5 asec of the QsoBunch head. If no such surrogate Target object can be found, we use the ZERO surrogate (literally, all fields are zero). The test for a target object being a QSO candidate is: primary target flags set to one of TARGET_QSO_HIZ |TARGET_QSO_CAP | TARGET_QSO_SKIRT |TARGET_QSO_FIRST_CAP | TARGET_QSO_FIRST_SKIRT The table also includes the id and summary statistics for matching FIRST and ROSAT objects if they exist, and zero otherwise Also includes the absolute magnitude based on Pen (1999) and Pei (1999) if a reliable reshift available from a specobj object in the bunch.

nametypelengthunitucddescription
targetObjIDbigint8  SDSS identifier
headObjIDbigint8 ID_MAINobject ID of bunch head
targetRafloat8deg J2000 right ascension (r')
targetDecfloat8deg J2000 declination (r')
targetCxfloat8 POS_EQ_CART_Xunit vector for ra+dec
targetCyfloat8 POS_EQ_CART_Yunit vector for ra+dec
targetCzfloat8 POS_EQ_CART_Zunit vector for ra+dec
targetPsfMag_ureal4magPHOT_SDSS_UPSF flux
targetPsfMag_greal4magPHOT_SDSS_GPSF flux
targetPsfMag_rreal4magPHOT_SDSS_RPSF flux
targetPsfMag_ireal4magPHOT_SDSS_IPSF flux
targetPsfMag_zreal4magPHOT_SDSS_ZPSF flux
targetPsfMagErr_ureal4mag PSF flux error
targetPsfMagErr_greal4mag PSF flux error
targetPsfMagErr_rreal4mag PSF flux error
targetPsfMagErr_ireal4mag PSF flux error
targetPsfMagErr_zreal4mag PSF flux error
targetExtinction_ureal4mag Extinction in each filter
targetExtinction_greal4mag Extinction in each filter
targetExtinction_rreal4mag Extinction in each filter
targetExtinction_ireal4mag Extinction in each filter
targetExtinction_zreal4mag Extinction in each filter
targetTypeint4  Morphological type classification of object.
targetModeint4  1:primary, 2:secondary,4:outside survey.
targetStatusint4  ˘photoStatus÷ flags of this object
targetFlagsbigint8  Photo Object Attribute
targetFlags_ubigint8  Object detection flags per band
targetFlags_gbigint8  Object detection flags per band
targetFlags_rbigint8  Object detection flags per band
targetFlags_ibigint8  Object detection flags per band
targetFlags_zbigint8  Object detection flags per band
targetRowC_ireal4  Row center position (r' coordinates)
targetColC_ireal4  Column center position (r' coordinates)
targetInsideMaskint4  Flag tells if object inside a mask & why
targetPrimTargetint4  Bit mask of primary target categories
targetPriTargHiZint4  1: object flagged as HiZ QSO
targetPriTargLowZint4  1: object flagged as cap|skirt QSO
targetPriTargFirstint4  1: object flagged as first cap|skirt QSO
targetFieldIDbigint8  Field this object is in
targetFieldMjdfloat8  MJD(TAI) Julian Date row 0 was read
targetFieldQualityint4  Quality of field
targetFieldCulledint4  Targets culled from the field
targetSectorIDbigint8  The sector covering this object or 0
targetFirstIDint4  matching FIRST catalog id or 0
targetFirstPeakfloat8  Peak first radio flux
targetRosatIDint4  matching ROSAT source (0 = no match)
targetRosatCpsfloat8ct/s -- integrated ROSAT counts
targetMifloat8  estimated absolute magnitude based on Pen (1999) (or 0)
TargetQsoTargetedtinyint1  1 means this was targeted as a QSO
targetUniformbit1  boolean: part of the uniform QSO sample