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The Neutral Hydrogen Properties of Galaxies in Gas-rich Groups
Robert Džudžar, Virginia Kilborn, Gerhardt Meurer +23
We present an analysis of the integrated neutral hydrogen (HI) properties for 27 galaxies within nine low mass, gas-rich, late-type dominated groups which we denote "Choirs". We fi…
On the dynamics of the Small Magellanic Cloud through high-resolution ASKAP HI observations
E. M. Di Teodoro, N. M. McClure-Griffiths, K. E. Jameson +10
We use new high-resolution HI data from the Australian Square Kilometre Array Pathfinder (ASKAP) to investigate the dynamics of the Small Magellanic Cloud (SMC). We model the HI ga…
Cold gas outflows from the Small Magellanic Cloud traced with ASKAP
N. M. McClure-Griffiths, H. Dénes, J. M. Dickey +19
Feedback from massive stars plays a critical role in the evolution of the Universe by driving powerful outflows from galaxies that enrich the intergalactic medium and regulate star…
Bulk flow and shear in the local Universe: 2MTF and COSMICFLOWS-3
Fei Qin, Cullan Howlett, Lister Staveley-Smith +1
The low-order kinematic moments of galaxies, namely bulk flow and shear, enables us to test whether theoretical models can accurately describe the evolution of the mass density fie…
WALLABY Early Science - I. The NGC 7162 Galaxy Group
Tristan N. Reynolds, Tobias Westmeier, Lister Staveley-Smith +21
We present Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY) early science results from the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the NGC…
The Re-Acceleration of the Shock Wave in the Radio Remnant of SN 1987A
Yvette Cendes, Bryan Gaensler, Chi-Yung Ng +3
We report on updated radio imaging observations of the radio remnant of Supernova 1987A (SN 1987A) at 9 GHz, taken with the Australia Telescope Compact Array (ATCA), covering a 25-…
Ghost of a Shell: Magnetic Fields of Galactic Supershell GSH 006157
Alec J. M. Thomson, N. M. McClure-Griffiths, Christoph Federrath +6
We identify a counterpart to a Galactic supershell in diffuse radio polarisation, and use this to determine the magnetic fields associated with this object. GSH 006157 has pe…
Interstellar magnetic cannon targeting the Galactic halo : A young bubble at the origin of the Ophiuchus and Lupus molecular complexes
J. -F. Robitaille, A. M. M. Scaife, E. Carretti +5
We report the detection of a new Galactic bubble at the interface between the halo and the Galactic disc. We suggest that the nearby Lupus complex and parts of the Ophiuchus comple…
Ring Galaxies in the EAGLE Hydrodynamical Simulations
Ahmed Elagali, Claudia D. P. Lagos, O. Ivy Wong +5
We study the formation and evolution of ring galaxies in the Evolution and Assembly of GaLaxies and their Environments (EAGLE) simulations. We use the largest reference model Ref-L…
Galactic synchrotron distribution derived from 152 HII region absorption features in the full GLEAM survey
H. Su, J. P. Macquart, N. Hurley-Walker +22
We derive the synchrotron distribution in the Milky Way disk from HII region absorption observations over -40° < l < 40° at six frequencies of 76.2, 83.8, 91.5, 99.2, 106.9, and 11…
ALMA observations of supernova remnant N49 in the LMC: I. Discovery of CO clumps associated with X-ray and radio continuum shells
Y. Yamane, H. Sano, J. Th. van Loon +24
N49 (LHA 120-N49) is a bright X-ray supernova remnant (SNR) in the Large Magellanic Cloud. We present new CO( = 1-0, 3-2), HI, and 1.4 GHz radio-continuum observations of…
Near-identical star formation rate densities from H and FUV at redshift zero
Fiona M. Audcent-Ross, Gerhardt R. Meurer, O. I. Wong +27
For the first time both H and far-ultraviolet (FUV) observations from an HI-selected sample are used to determine the dust-corrected star formation rate density (SFRD: )…
Local Volume HI Survey: the far-infrared radio correlation
Li Shao, Baerbel Koribalski, Jing Wang +2
In this paper we measure the far-infrared (FIR) and radio flux densities of a sample of 82 local gas-rich galaxies, including 70 "dwarf" galaxies (), from the L…
Detection of Linear Polarization in the Radio Remnant of Supernova 1987A
Giovanna Zanardo, Lister Staveley-Smith, B. M. Gaensler +4
Supernova 1987A in the Large Magellanic Cloud has proven a unique laboratory to investigate particle acceleration in young supernova remnants. Here we report the first detection of…
Search for a Radio Pulsar in the Remnant of Supernova 1987A
S. -B. Zhang, S. Dai, G. Hobbs +5
We have observed the remnant of supernova SN~1987A (SNR~1987A), located in the Large Magellanic Cloud (LMC), to search for periodic and/or transient radio emission with the Parkes…
Bulk flow in the combined 2MTF and 6dFGSv surveys
Fei Qin, Cullan Howlett, Lister Staveley-Smith +1
We create a combined sample of 10,904 late and early-type galaxies from the 2MTF and 6dFGSv surveys in order to accurately measure bulk flow in the local Universe. Galaxies and gro…
The 30-Year Search for the Compact Object in SN 1987A
Dennis Alp, Josefin Larsson, Claes Fransson +32
Despite more than 30 years of searches, the compact object in Supernova (SN) 1987A has not yet been detected. We present new limits on the compact object in SN 1987A using millimet…
An HI study of the collisional ring galaxy NGC 922
Ahmed Elagali, O. Ivy Wong, Se-Heon Oh +4
We present new atomic hydrogen (HI) observations of the collisional ring galaxy NGC 922 obtained using the Australia Telescope Compact Array. Our observations reveal for the first…
High-resolution Observations of Low-luminosity Gigahertz-Peaked Spectrum and Compact Steep Spectrum Sources
Jordan D. Collier, Steven J. Tingay, Joseph R. Callingham +27
We present Very Long Baseline Interferometry observations of a faint and low-luminosity ($L_{\rm 1.4 GHz} < 10^{27}~\mbox{W Hz}^{-1}$) Gigahertz-Peaked Spectrum (GPS) and Compact S…
Advanced Diagnostics for the Study of Linearly Polarized Emission. II: Application to Diffuse Interstellar Radio Synchrotron Emission
C. A. Herron, Blakesley Burkhart, B. M. Gaensler +8
Diagnostics of polarized emission provide us with valuable information on the Galactic magnetic field and the state of turbulence in the interstellar medium, which cannot be obtain…
The S-PASS view of polarized Galactic Synchrotron at 2.3 GHz as a contaminant to CMB observations
N. Krachmalnicoff, E. Carretti, C. Baccigalupi +8
We analyze the Southern Sky emission in linear polarization at 2.3 GHz as observed by the S-band Polarization All Sky Survey S-PASS. Our purpose is to study the properties of the d…