Submillimeter Array 440 μm/690 GHz Line and Continuum Observations of Orion KL
Hunter, T. R.
Ho, P. T. P.
Liu, S.‐Y.Note: Order does not necessarily reflect citation order of authors.
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CitationBeuther, H., Q. Zhang, M. J. Reid, T. R. Hunter, M. Gurwell, D. Wilner, J.‐H. Zhao, et al. 2006. “Submillimeter Array 440 μm/690 GHz Line and Continuum Observations of Orion KL.” The Astrophysical Journal 636 (1) (January): 323–331. doi:10.1086/498015.
AbstractSubmillimeter Array observations of Orion-KL at ∼ 1′′ resolution in the 440 µm/690 GHz band reveal new insights about the continuum and line emission of the region. The 440 µm continuum flux density measurement from source I allows us to differentiate among the various proposed physical models: Source I can be well modeled by a “normal” protostellar SED consisting of a proton-electron free-free emission component at low frequencies and a strong dust component in the submillimeter bands. Furthermore, we find that the protostellar object SMA1 is clearly distinct from the hot core. The non-detection of SMA1 at cm and infrared wavelengths suggests that it may be one of the youngest sources in the entire Orion-KL region. The molecular line maps show emission mainly from the sources I, SMA1 and the hot core peak position. An analysis of the CH 3CN(37 K − 36 K) K-ladder ( K = 0...3) indicates a warm gas component of the order 600 ± 200K. In addition, we detect a large fraction ( ∼ 58%) of unidentified lines and discuss the difficulties of line identifications at these frequencies.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:32095368
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