Quasar Astrometric Redshifts with LSST

Christina Peters, University of Toronto

LSST will produce an unprecedented quantity of photometric AGN data, but
there will be limited opportunities for spectroscopic follow up to
determine the redshifts (and confirm the identity) of newly discovered
AGN. While photometric redshift estimates are known to be accurate at some
redshifts, they are also highly degenerate at others. Incorporating
astrometric measurements to calculate a complimentary astrometric redshift
can break these degeneracies, thus producing more accurate redshift
estimates. I will describe how we have used the LSST Metric Analysis
Framework (MAF) and various surveys from the Operations Simulator (OpSim)
to determine how possible LSST cadences will influence the astrometric
redshift capabilities of the survey.