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Infrared continuum sizes of Be star disks

Published online by Cambridge University Press:  12 July 2011

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

References

Dougherty, S. M., Waters, L. B. F. M., Burki, G., Cote, J. et al. 1994, A&A, 290, 609Google Scholar
Gies, D. R., Bagnuolo, W. G. Jr., Baines, E. K., ten Brummelaar, T. A. et al. 2007, ApJ, 654, 527CrossRefGoogle Scholar
Ita, Y., Matsuura, M., Ishihara, D., Oyabu, S. et al. 2010, A&A, 514, A2Google Scholar
Meilland, A., Stee, P., Vannier, M., Millour, F. et al. 2007, A&A, 464, 59Google Scholar
Waters, L. B. F. M., Cote, J. & Lamers, H. J. G. L. M. 1987, A&A, 185, 206Google Scholar
Zhang, P., Chen, P. S. & Yang, H. T. 2005, New Astron., 10, 325CrossRefGoogle Scholar
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