Submillimeter Array Observations of CS J = 14-13 Emission from the Evolved Star IRC +10216 | Zendy

Ken Young | Zendy; T. R. Hunter | Zendy; David J. Wilner | Zendy; Mark Gurwell | Zendy; John W. Barrett | Zendy; R. Blundell | Zendy; Robert D. Christensen | Zendy; D. Fong | Zendy; Naomi Hirano | Zendy; Paul T. P. Ho | Zendy; ShengYuan Liu | Zendy; K. Y. Lo | Zendy; Robert N. Martin | Zendy; Satoki Matsushita | Zendy; J. M. Moran | Zendy; Nagayoshi Ohashi | Zendy; D. C. Papa | Zendy; Nimesh Patel | Zendy; F. Patt | Zendy; A. B. Peck | Zendy; Chunhua Qi | Zendy; Masao Saito | Zendy; A. E. T. Schinckel | Zendy; Hiroko Shinnaga | Zendy; T. K. Sridharan | Zendy; Shigehisa Takakuwa | Zendy; Edward Tong | Zendy; Dinh Van Trung | Zendy

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Submillimeter Array Observations of CS J = 14-13 Emission from the Evolved Star IRC +10216

Author(s) -

Ken Young,

T. R. Hunter,

David J. Wilner,

Mark Gurwell,

John W. Barrett,

R. Blundell,

Robert D. Christensen,

D. Fong,

Naomi Hirano,

Paul T. P. Ho,

ShengYuan Liu,

K. Y. Lo,

Robert N. Martin,

Satoki Matsushita,

J. M. Moran,

Nagayoshi Ohashi,

D. C. Papa,

Nimesh Patel,

F. Patt,

A. B. Peck,

Chunhua Qi,

Masao Saito,

A. E. T. Schinckel,

Hiroko Shinnaga,

T. K. Sridharan,

Shigehisa Takakuwa,

Edward Tong,

Dinh Van Trung

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/420883

Subject(s) - physics , astrophysics , photosphere , excited state , circumstellar envelope , submillimeter array , emission spectrum , line (geometry) , astronomy , stars , star formation , spectral line , atomic physics , geometry , mathematics

We present imaging observations of the evolved star IRC+10216 in the CSJ=14--13 line at 685.4 GHz and associated submillimeter continuum at about 2''resolution made with the partially constructed Submillimeter Array. The CSJ=14--13 line emission from the stellar envelope is well resolved bothspatially and spectrally. The strong central concentration of the line emissionprovides direct evidence that CS is a parent molecule that forms close to thestellar photosphere, in accord with previous images of the lower excitation CSJ=2--1 line and inferences from unresolved observations of vibrationallyexcited transitions. The continuum emission is dominated by a compact,unresolved component, consistent with the photospheric emission, that accountsfor about 20% of the broadband 450 micron flux. These are the firstinterferometer imaging observations made in the semi-transparent 450 micronatmospheric window.Comment: accepted for publication in ApJ Letters, 12 pages, 3 figure

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