Speaker
Description
We present high-resolution S-band (3.1GHz) radio continuum observations of eleven massive young stellar objects (MYSOs), most of which exhibited extended emission in the SARAO MeerKAT Galactic Plane Survey conducted at 1.3GHz. The improved angular resolution of ∼3.1" at 3.1GHz enabled the detection of all the jets with many resolved in to multiple components, allowing detailed analysis of their fluxes, angular sizes, morphologies, and spectral indices. Over 75% of the components are spatially resolved in our observations. The spectral indices, derived from this data and previous observations, span a wide range from 𝛼 ≃−1.5 to +2.2, suggesting a mix of optically thin and thick thermal emission, as well as non-thermal synchrotron radiation. Notably, non-thermal components are prevalent, detected in∼82% of the sources. Morphological characteristics of the sources reveal evidence of both monopolar and bipolar jets, jet bending, precession, and complex multi-component structures, indicative of the dynamic environments of massive star formation.
| Stream | Science or Engineering |
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