Speaker
Dr
Portia Legodi
(University of South Africa)
Description
We explore the three-dimensional structure of the Milky Way by tracing neutral atomic hydrogen (H I) using MeerKAT Absorption Line Survey (MALS) data. We aim to map the Galaxy’s spiral arms and large-scale features both along the midplane and at higher Galactic latitudes. Employing a Bayesian framework, consistent with Reid et al. (2016), we infer robust distance estimates to HI clouds from their observed line-of-sight velocities, RA, and Dec. This approach allows us to construct a detailed 3D distribution of H I gas. We will summarise the project’s status and present results on spiral-arm structure, vertical neutral hydrogen distribution, and potential Galactic disk asymmetries.
| Stream | Science or Engineering |
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Primary author
Dr
Portia Legodi
(University of South Africa)
Co-authors
Prof.
James Chibueze
(University of South Africa)
Dr
Jude Ugwu
(University of South Africa)
Dr
Willice Obonyo
(University of South Africa)