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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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