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| Paper: |
Asymmetries in AGB Stars: New Results from Aperture Masking
Techniques |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
203 |
| Authors: |
Lykou, F.; Hron, J.; Paladini, C.; Zijlstra, A. A.; Tuthill, P. G.; Norris, B.; Lagadec, E. |
| Abstract: |
Recent studies have shown that the extended circumstellar envelopes of
AGB stars are not always spherical in shape. Moreover, the majority of
post-AGB stars exhibit highly aspherical shapes, such as bipolar
nebulae and equatorial waists in the form of dusty and gaseous disks
and/or tori. As such, one should expect that the origin of the
morphological changes seen in later evolutionary stages can be traced
during the AGB phase. We now present a study of AGB stars using aperture
masking interferometry to resolve such aspherical structures. |
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