We have carried out the first general submillimeter analysis of the field towards GRSMC 45.46+0.05 , a massive star forming region in Aquila .
The deconvolved 6 deg ^ { 2 } ( 3 ^ { \circ } \times 2 ^ { \circ } ) maps provided by BLAST in 2005 at 250 , 350 , and 500 µm were used to perform a preliminary characterization of the clump population previously investigated in the infrared , radio , and molecular maps .
Interferometric CORNISH data at 4.8 GHz have also been used to characterize the Ultracompact H ii regions ( UCH ii Rs ) within the main clumps .
By means of the BLAST maps we have produced an initial census of the submillimeter structures that will be observed by Herschel , several of which are known Infrared Dark Clouds ( IRDCs ) .
Our spectral energy distributions of the main clumps in the field , located at \sim 7 kpc , reveal an active population with temperatures of T \sim 35-40 K and masses of \sim 10 ^ { 3 } M _ { \odot } for a dust emissivity index \beta = 1.5 .
The clump evolutionary stages range from evolved sources , with extended H ii regions and prominent IR stellar population , to massive young stellar objects , prior to the formation of an UCH ii R. The CORNISH data have revealed the details of the stellar content and structure of the UCH ii Rs .
In most cases , the ionizing stars corresponding to the brightest radio detections are capable of accounting for the clump bolometric luminosity , in most cases powered by embedded OB stellar clusters .