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Submillimeter Array Observations of CS J=14--13 Emission from the Evolved Star IRC+10216 | K.H. Young
; T.R. Hunter
; D.J. Wilner
; M.A. Gurwell et al.
; | Date: |
17 Mar 2004 | Journal: | Astrophys.J. 616 (2004) L51-L54 | Subject: | astro-ph | Affiliation: | Harvard-Smithsonian Center for Astrophysics | Abstract: | We present imaging observations of the evolved star IRC+10216 in the CS J=14--13 line at 685.4 GHz and associated submillimeter continuum at about 2’’ resolution made with the partially constructed Submillimeter Array. The CS J=14--13 line emission from the stellar envelope is well resolved both spatially and spectrally. The strong central concentration of the line emission provides direct evidence that CS is a parent molecule that forms close to the stellar photosphere, in accord with previous images of the lower excitation CS J=2--1 line and inferences from unresolved observations of vibrationally excited transitions. The continuum emission is dominated by a compact, unresolved component, consistent with the photospheric emission, that accounts for about 20% of the broadband 450 micron flux. These are the first interferometer imaging observations made in the semi-transparent 450 micron atmospheric window. | Source: | arXiv, astro-ph/0403418 | Services: | Forum | Review | PDF | Favorites |
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