First Science Observations with SOFIA/FORCAST: 6-37 μm Imaging of Orion BN/KL
Abstract
The Becklin-Neugebauer/Kleinmann-Low (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 submillimeter wavelength regime. Using the newly commissioned SOFIA airborne telescope and its 5-40 μm camera FORCAST, images of the entire BN/KL complex have been acquired. The 31.5 and 37.1 μm images represent the highest resolution observations (lsim4'') 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 μm 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 μm that coincides with the northeastern outflow lobe from the protostellar disk associated with radio source I.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 2012
- DOI:
- 10.1088/2041-8205/749/2/L23
- arXiv:
- arXiv:1202.4802
- Bibcode:
- 2012ApJ...749L..23D
- Keywords:
-
- infrared: ISM;
- ISM: individual objects: Orion-BN Orion Kleinmann-Low;
- stars: massive;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 6 pages, 3 figures, accepted for publication in ApJL