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TABLE  qsoVarStripe

Variability information on eBOSS quasar targets using SDSS stripe 82 data.
The table 'qsoVarStripe' contains additional informations derived from essentially all multi-epoq SDSS photometry carried out in the Stripe 82 region.

nametypelengthunitucddescription
VAR_OBJIDbigint8  ObjId
RAfloat8deg RA (DR12 astrometry)
DECfloat8deg DEC (DR12 astrometry)
VAR_CHI2real4  Reduced chi2 when the combined light curve is adjusted to a constant
VAR_Areal4  Structure function parameter A as defined in Palanque-Delabrouille et al. (2011)
VAR_GAMMAreal4  Structure function parameter gamma as defined in Palanque-Delabrouille et al. (2011)
NEPOQSint4  Number of epoqs (SDSS observations) used in lightcurve
CHI2_Ureal4  Reduced chi2 in u band
CHI2_Greal4  Reduced chi2 in g band
CHI2_Rreal4  Reduced chi2 in r band
CHI2_Ireal4  Reduced chi2 in i band
CHI2_Zreal4  Reduced chi2 in z band
VAR_NNreal4  Variability neural network output to discriminate stars against QSO
MJD_FIRSTreal4  MJD for the first observation
MJD_LASTreal4  MJD for the last observation