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We present Submillimeter Array observations of the 880 micron continuumemission from three circumstellar disks around young stars in Orion that lieseveral arcminutes (> 1-pc) north of the Trapezium cluster. Two of the threedisks are in the binary system 253-1536. Silhouette disks 216-0939 and253-1536a are found to be more massive than any previously observed Oriondisks, with dust masses derived from their submillimeter emission of 0.045 Msunand 0.066 Msun, respectively. The existence of these massive disks reveals thedisk mass distribution in Orion does extend to high masses, and that thetruncation observed in the central Trapezium cluster is a result ofphotoevaporation due to the proximity of O-stars. 253-1536b has a disk mass of0.018 Msun, making the 253-1536 system the first optical binary in which eachprotoplanetary disk is massive enough to potentially form Solar systems.

Massive Protoplanetary Disks in Orion Beyond the Trapezium Cluster