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Galaxies 2017, 5(3), 45; doi:10.3390/galaxies5030045

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

Observatorio Astronómico de Quito, Escuela Politécnica Nacional, Av. Gran Colombia S/N, Quito 170403, Ecuador
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Academic Editor: Emilio Elizalde
Received: 18 July 2017 / Revised: 23 August 2017 / Accepted: 24 August 2017 / Published: 28 August 2017
(This article belongs to the Special Issue On the Origin (and Evolution) of Baryonic Galaxy Halos)
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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° × 90° region of the Galaxy halo. The HI column densities in the range of 3–11 × 10 20 cm 2 have been estimated for some of the studied regions. In our map—obtained with a spectral sensitivity of ∼2 K—we do not detect any HI 21-cm emission line above 2 σ at Galactic latitudes higher than ∼46°. This report summarizes our contribution presented at the conference on the origin and evolution of barionic Galaxy halos. View Full-Text
Keywords: 21-cm emission line; Galaxy halo; interstellar medium 21-cm emission line; Galaxy halo; interstellar medium
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

López, E.; Armijos, J.; Llerena, M.; Aldás, F. The HI Distribution Observed toward a Halo Region of the Milky Way. Galaxies 2017, 5, 45.

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