We present results from a survey of a 1300 arcmin ^ { 2 } region of the Orion B South molecular cloud , including NGC 2024 , NGC 2023 , and the Horsehead Nebula ( B33 ) , obtained using the Submillimetre Common-User Bolometer Array ( SCUBA ) on the James Clerk Maxwell Telescope .
Submillimeter continuum observations at 450 \mu m and 850 \mu m are discussed .
Using an automated algorithm , 57 discrete emission features ( “ clumps ” ) are identified in the 850 \mu m map .
The physical conditions within these clumps are investigated under the assumption that the objects are in quasi-hydrostatic equilibrium .
The best fit dust temperature for the clumps is found to be T _ { d } = 18 \pm 4 K , with the exception of those associated with the few known far infrared sources residing in NGC 2024 .
The latter internally heated sources are found to be much warmer .
In the region surrounding NGC 2023 , the clump dust temperatures agree with clump gas temperatures determined from molecular line excitation measurements of the CO molecule .
The bounding pressure on the clumps lies in the range \log ( k ^ { -1 } P { cm } ^ { 3 } { K } ^ { -1 } ) = 6.1 \pm 0.3 .
The cumulative mass distribution is steep at the high mass end , as is the stellar Initial Mass Function .
The distribution flattens significantly at lower masses , with a turn-over around 3 – 10 M _ { \odot } .