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GASKAP-HI Pilot Survey Science I: ASKAP Zoom Observations of HI Emission in the Small Magellanic Cloud
N. M. Pingel, J. Dempsey, N. M. McClure-Griffiths +53
We present the most sensitive and detailed view of the neutral hydrogen (HI) emission associated with the Small Magellanic Cloud (SMC), through the combination of data from the Aus…
A Low Frequency Pilot Survey of Southern HII Regions in the Vela Constellation
Chenoa D. Tremblay, Tyler L. Bourke, James A. Green +3
Atomic ionised regions with strong continuum emission are often associated with regions of high-mass star formation and low-frequency (<2GHz) observations of these regions are need…
GASKAP Pilot Survey Science II: ASKAP Zoom Observations of Galactic 21-cm Absorption
J. M. Dickey, J. M. Dempsey, N. M. Pingel +12
Using the Australian Square Kilometre Array Pathfinder to measure 21-cm absorption spectra toward continuum background sources, we study the cool phase of the neutral atomic gas in…
Discovery of a New Population of Galactic HII Regions with Ionized Gas Velocity Gradients
Dana S. Balser, Trey V. Wenger, L. D. Anderson +4
We investigate the kinematic properties of Galactic HII regions using radio recombination line (RRL) emission detected by the Australia Telescope Compact Array (ATCA) at 4-10 GHz a…
The Global Magneto-Ionic Medium Survey: A Faraday Depth Survey of the Northern Sky Covering 1280-1750 MHz
M. Wolleben, T. L. Landecker, K. A. Douglas +17
The Galactic interstellar medium hosts a significant magnetic field, which can be probed through the synchrotron emission produced from its interaction with relativistic electrons.…
The MACH HI absorption survey I: Physical conditions of cold atomic gas outside of the Galactic plane
Claire E. Murray, Snežana Stanimirović, Carl Heiles +5
Tracing the transition between the diffuse atomic interstellar medium (ISM) and cold, dense gas is crucial for deciphering the star formation cycle in galaxies. Here we present MAC…
The Global Magneto-Ionic Medium Survey (GMIMS): The brightest polarized region in the Southern sky at 75cm and its implications for Radio Loop II
Alec J. M. Thomson, T. L. Landecker, N. M. McClure-Griffiths +16
Using the Global Magneto-Ionic Medium Survey (GMIMS) Low-Band South (LBS) southern sky polarization survey, covering 300 to 480 MHz at 81 arcmin resolution, we reveal the brightest…
Tiny-scale Structure Discovered toward PSR B155750
Mengting Liu, Marko Krčo, Di Li +7
Optical depth variations in the Galactic neutral interstellar medium (ISM) with spatial scales from hundreds to thousands of astronomical units have been observed through HI absorp…
The Southern HII Region Discovery Survey. II. The Full Catalog
Trey V. Wenger, J. R. Dawson, John M. Dickey +6
The Southern HII Region Discovery Survey (SHRDS) is a 900 hour Australia Telescope Compact Array 4-10 GHz radio continuum and radio recombination line (RRL) survey of Galactic HII…