Tracing the Development of Dust around Evolved Stars: The Case of 47 Tuc.

Lebeltzer, Th.; Posch, Th.; Hinkle, Kenneth H; Wood, Peter R; Bouwman, J.

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Tracing the Development of Dust around Evolved Stars: The Case of 47 Tuc.

Date

2006

Authors

Lebeltzer, Th.

Posch, Th.

Hinkle, Kenneth H

Wood, Peter R

Bouwman, J.

Publisher

IOP Publishing

Abstract

We observed mid-infrared (7.5-22 μm) spectra of asymptotic giant branch (AGB) stars in the globular cluster 47 Tuc with the Spitzer Space Telescope, and we find significant dust features of various types. A comparison of the characteristics of the dust s