A SCUBA-2 850-μm survey of protoplanetary discs in the σ Orionis cluster.

We present the results from a large $850{\rm -}\mu$m survey of the σ Orionis cluster using the SCUBA-2 camera on the James Clerk Maxwell Telescope. The 0$_{.}^{\circ}$5 diameter circular region we surveyed contains 297 young stellar objects with an age estimated at about 3 Myr. We detect nine of these objects, eight of which have infrared excesses from an inner disc. We also serendipitously detect...