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Infrared continuum sizes of Be star disks

Published online by Cambridge University Press:  12 July 2011

Douglas R. Gies ,
Yamina N. Touhami  and
Gail H. Schaefer
Douglas R. Gies
Affiliation:
Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University, P. O. Box 4106, Atlanta, GA 30302-4106, U.S.A. email: gies@chara.gsu.edu, yamina@chara.gsu.edu
Yamina N. Touhami
Affiliation:
Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University, P. O. Box 4106, Atlanta, GA 30302-4106, U.S.A. email: gies@chara.gsu.edu, yamina@chara.gsu.edu
Gail H. Schaefer
Affiliation:
Georgia State University, CHARA Array, P. O. Box 48, Mount Wilson, CA 91023, U.S.A. email: schaefer@chara-array.org
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Abstract

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Long baseline interferometry now offers us the opportunity to measure the dimensions of Be star circumstellar disks across the spectrum. This includes the near-infrared continuum where the emission is dominated by bound-free and free-free emission from the ionized disk gas. Here we present the results of calculations of the disk sizes and continuum flux excesses for a simple version of the viscous decretion model of the disk. We compare these results to recent 18 μm flux measurements from the AKARI infrared satellite all-sky survey.

Keywords

techniques: interferometriccircumstellar matterstars: emission-lineBe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 390 - 391
Copyright
Copyright © International Astronomical Union 2011

References

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