We present Submillimeter Array The Submillimeter Array is a joint project between the Submillimeter Astrophysical Observatory and the Academica Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academica Sinica . observations of the 880 \mu m continuum emission from three circumstellar disks around young stars in Orion that lie several arcminutes ( \gtrsim 1-pc ) north of the Trapezium cluster .
Two of the three disks are in the binary system 253-1536 .
Silhouette disks 216-0939 and 253-1536a are found to be more massive than any previously observed Orion disks , with dust masses derived from their submillimeter emission of 0.045 M _ { \odot } and 0.066 M _ { \odot } , respectively .
The existence of these massive disks reveals the disk mass distribution in Orion does extend to high masses , and that the truncation observed in the central Trapezium cluster is a result of photoevaporation due to the proximity of O-stars .
253-1536b has a disk mass of 0.018 M _ { \odot } , making the 253-1536 system the first optical binary in which each protoplanetary disk is massive enough to potentially form Solar systems .