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Imaging Red Supergiants with VLT/SPHERE/ZIMPOL

Published online by Cambridge University Press:  30 December 2019

E. Cannon ,
M. Montargès ,
L. Decin  and
A. de Koter
E. Cannon
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Leuven, Belgium email: [email protected]
M. Montargès
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Leuven, Belgium email: [email protected]
L. Decin
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Leuven, Belgium email: [email protected]
A. de Koter
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Leuven, Belgium email: [email protected] Anton Pannekoek Institute of Astronomy, University of Amsterdam, The Netherlands
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Abstract

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Using the VLT-SPHERE/ZIMPOL adaptive optics imaging polarimeter, images of a sample of nearby red supergiants (RSGs) were obtained in multiple filters. From these data, we obtain information on geometrical structures in the inner wind, the onset radius and spatial distribution of dust grains as well as dust properties such as grain size. As dust grains may play a role in initiating and/or driving the outflow, this could provide us with clues as to the wind driving mechanism.

Keywords

red supergiantsmass losswindscircumstellar matterimaging
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 362 - 364
Copyright
© International Astronomical Union 2019 

References

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Ohnaka, K., Hofmann, K.-H., Schertl, D., Weigelt, G., Baffa, C., Chelli, A., Petrov, R., and Robbe-Dubois, S. 2013, A&A, 555, A24 Google Scholar