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| Paper: |
Imaging Radio Photospheres with the Jansky Very Large Array |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
131 |
| Authors: |
Matthews, L. D.; Reid, M. J.; Menten, K. M. |
| Abstract: |
Using the Jansky Very Large Array (JVLA), we have imaged the radio
photosphere of the long-period variable star W Hya at 45 GHz
(∼ 7 mm) with a resolution of ∼ 40 mas. Our data reveal
a non-spherical photospheric shape, consistent with earlier
measurements. We also find evidence for an elongation along
PA ≈ –5°, the orientation of which is consistent
with the previously measured projected magnetic field direction and
an extension in the 18 μm dust emission, both at larger scales. |
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