Submillimeter continuum emission in the ρ Ophiuchi molecular cloud: Filaments, arcs, and an unidentified far-infrared object

New wide-field images of the p Ophiuchi molecular cloud at 850 and 450 μm obtained with the Submillimeter Common-User Bolometer Array on the James Clerk Maxwell Telescope reveal a wide variety of large-scale features that were previously unknown. Two linear features, each 4′ (0.2 pc) in length, extend to the north of the bright emission region containing SM1 and VLA 1623. These features may correspond to the walls of a previously unidentified …