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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
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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.

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K. H. Young, T. R. Hunter, D. J. Wilner, M. A. Gurwell. 2004-03-17. Submillimeter Array Observations of CS J=14--13 Emission from the Evolved Star IRC+10216. https://doi.org/10.1086/420883

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