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Evidence of Clumpy Dust Shell Structure in IRC+10216 from K Band Lunar Occultation Observations

Published online by Cambridge University Press:  13 May 2016

T. Chandrasekhar  and
Soumen Mondal
T. Chandrasekhar
Affiliation:
Physical Research Laboratory, Navrangpura, Ahmedabad, India
Soumen Mondal
Affiliation:
Physical Research Laboratory, Navrangpura, Ahmedabad, India

Abstract

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Lunar occultation observations at 2.2 microns of the inner dust shell of the carbon rich long period variable IRC + 10216 yield a clumpy structure with atleast four components. Comparison with concurrent and earlier speckle observations confirm the presence of these components and show that real spatial changes are taking place at the level of milli arcseconds on time scales of a few years in the inner dust shell of IRC + 10216.

Type
Stars and Stellar Atmospheres
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 296 - 297
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Chandrasekhar, T. 1999, Bull. Astr. Soc. India, 27, 43.Google Scholar
Osterbart, R., Balega, Y. Y., Blocker, T., Menshchikov, A. B., Weigelt, G. 2000, A&A, 357, 169.Google Scholar