Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Science Observations with SOFIA/FORCAST: 6 TO 37 micron Imaging of
  Orion BN/KL   The BN/KL region of the Orion Nebula is the nearest region of high mass star
formation in our galaxy. As such, it has been the subject of intense
investigation at a variety of wavelengths, which have revealed it to be
brightest in the infrared to sub-mm wavelength regime. Using the newly
commissioned SOFIA airborne telescope and its 5-40 micron camera FORCAST,
images of the entire BN/KL complex have been acquired. The 31.5 and 37.1 micron
images represent the highest resolution observations (<=4") ever obtained of
this region at these wavelengths. These observations reveal that the BN object
is not the dominant brightness source in the complex at wavelengths >31.5
microns, and that this distinction goes instead to the source IRc4. It was
determined from these images and derived dust color temperature maps that IRc4
is also likely to be self-luminous. A new source of emission has also been
identified at wavelengths >31.5 microns that coincides with the northeastern
outflow lobe from the protostellar disk associated with radio source I.

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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc