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High spatial resolution 10 micron imaging of IRC + 10216Precise high-resolution 10-micron images of the carbon star IRC + 10216 have been obtained with a scanned linear array. The low noise and high dynamic range of these images permit deconvolution of the telescope point-spread function, revealing the radial brightness distribution of the circumstellar dust shell: approximate reflection symmetry is found in west-east scans, with a distinct division into two components of diameter about 0.40 and 2.2 arcsec. It is shown that this morphology is consistent with published interferometric data that had cast doubt upon an earlier, idealized two-component model. The observed brightness distribution implies that the circumstellar dust density may deviate substantially from the 1/r squared radial dependence expected for spherically symmetric outflow with constant velocity and constant rate of mass loss.
Document ID
19890023057
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bloemhof, E. E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Danchi, W. C.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Townes, C. H.
(California, University Berkeley, United States)
Mclaren, R. A.
(Canada-France-Hawaii Telescope Corp. Kamuela, HI, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1988
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 333
ISSN: 0004-637X
Subject Category
Astronomy
Accession Number
89A10428
Funding Number(s)
CONTRACT_GRANT: NGL-05-003-272
CONTRACT_GRANT: NSF AST-85-13415
Distribution Limits
Public
Copyright
Other

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