Published 2012
| Version Published + Submitted
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The many faces of Betelgeuse
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Abstract
The dynamics of the surface and inner atmosphere of the red supergiant star Betelgeuse are the subject of numerous high angular resolution and spectroscopic studies. Here, we present three-telescope interferometric data obtained at 11.15 μm wavelength with the Berkeley Infrared Spatial Interferometer (ISI), that probe the stellar surface continuum. We find striking variability in the size, effective temperature, and degree of asymmetry of the star over the years 2006–2009. These results may indicate an evolving shell of optically thick material close to the stellar photosphere.
Additional Information
© 2010 Astronomical Society of the Pacific. W. Fitelson, B.Walp, C.S. Ryan, D.D.S. Hale, K. Tatebe, A.A. Chandler, K. Reichl, R.L. Griffith, V. Toy, as well as many undergraduate researchers all participated in these observations, and their excellent help is greatly appreciated. This research made use of the SIMBAD database. We are grateful for support from the Gordon and Betty Moore Foundation, the Office of Naval Research, and the National Science Foundation.Attached Files
Published - 2011ASPC__448_1025R.pdf
Submitted - 1012.0377.pdf
Files
1012.0377.pdf
Additional details
Identifiers
- Eprint ID
- 96637
- Resolver ID
- CaltechAUTHORS:20190621-151240644
Related works
- Describes
- https://arxiv.org/abs/1012.0377 (URL)
Funding
- Gordon and Betty Moore Foundation
- Office of Naval Research (ONR)
- NSF
Dates
- Created
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2019-06-22Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field
Caltech Custom Metadata
- Series Name
- Astronomical Society of the Pacific Conference Series
- Series Volume or Issue Number
- 448