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arXiv · 1709.06513

The HI Distribution Observed toward a Halo Region of the Milky Way

Ericson López·Jairo Armijos·Mario Llerena·Franklin Aldás
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Abstract

We use observations of the neutral atomic hydrogen (HI) 21-cm emission line to study the spatial distribution of the HI gas in a 80$\degree\times~$90$\degree$ region of the Galaxy halo. The HI column densities in the range of \mbox{3--11$\times$10$^{20}$ cm$^{-2}$} have been estimated for some of the studied regions. In our map---obtained with a spectral sensitivity of $\sim$2 K---we do not detect any HI 21-cm emission line {above 2$σ$} at Galactic latitudes higher than $\sim${46}$\degree$. {This report summarizes our contribution presented at the conference on the origin and evolution of barionic Galaxy halos}.

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Ericson López, Jairo Armijos, Mario Llerena, Franklin Aldás. 2017-09-19. The HI Distribution Observed toward a Halo Region of the Milky Way. https://doi.org/10.3390/galaxies5030045

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