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The Pulsation of M-type Miras: Multi-Epoch ISO-SWS Observations and Dynamical Models

Published online by Cambridge University Press:  12 April 2016

B. Aringer ,
U.G. Jørgensen ,
F. Kerschbaum ,
J. Hron  and
S. Höfner
B. Aringer
Affiliation:
Astronomical Observatory, Copenhagen University, Denmark
U.G. Jørgensen
Affiliation:
Astronomical Observatory, Copenhagen University, Denmark
F. Kerschbaum
Affiliation:
Institute f. Astronomy, University of Vienna, Austria
J. Hron
Affiliation:
Institute f. Astronomy, University of Vienna, Austria
S. Höfner
Affiliation:
Dept. of Astronomy and Space Physics, Uppsala University, Sweden

Abstract

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We present time series of observed and synthetic ISO-SWS spectra of oxygen-rich Mira variables covering the wavelength range between 2.36 and 7.75 μm. The calculations are based on new dynamical models, which have been computed with a non-grey radiative transfer taking into account all relevant molecular opacities. It turns out that many features in the ISO spectra of cool long period variables which could not be reproduced within the framework of classical hydrostatic model atmospheres nor with grey dynamical calculations can now be understood without any additional assumptions. This is especially true for the water bands, which dominate the opacity in the infrared range of M-type Miras.

Type
Part 5. Mass Loss in Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 538 - 541
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Aringer, B. 2000, The SiO Molecule in the Atmospheres and Circumstellar Shells of AGB Stars, PhD Thesis, University of Vienna Google Scholar
Aringer, B., Höfner, S., Wiedemann, G., et al. 1999, A&A, 342, 799 Google Scholar
Aringer, B., Kirschbaum, F., Hron, J., & Höfner, S. 2000, In: ISO beyond the Peaks, ed. Saláma, A., ESA-SP 456, 295 Google Scholar
Bowen, G.H. 1988, ApJ, 329, 299 Google Scholar
Jørgensen, U.G., Jensen, P., Sørensen, G.O. & Aringer, B., 2001, A&A, 372, 249 Google Scholar
Jørgensen, U.G., Johnson, H.R., & Nordlund, Å. 1992, A&A, 261, 263 Google Scholar