The CIDA Variability Survey of Orion OB1. I: the low-mass population of Ori OB 1a and 1b

We present results of a large scale, multi-epoch optical survey of the Ori nOB1 association, carried out with the QuEST camera at the Venezuela National nAstronomical Observatory. We identify for the first time the widely spread nlow-mass, young population in the Orion OB1a and OB1b sub-associations. nCandidate members were picked up by their variability in th..