272 citations · 536 across the 6 of their papers we have counts for
6 papers
The Phase II Murchison Widefield Array: Design Overview
Randall B. Wayth, Steven J. Tingay, Cathryn M. Trott +26
We describe the motivation and design details of the "Phase II" upgrade of the Murchison Widefield Array (MWA) radio telescope. The expansion doubles to 256 the number of antenna t…
Evidence for a Non-Uniform Initial Mass Function in the Local Universe
Gerhardt R. Meurer, O. I. Wong, J. H. Kim +21
Many results in modern astrophysics rest on the notion that the Initial Mass Function (IMF) is universal. Our observations of HI selected galaxies in the light of H-alpha and the f…
Determining the properties of galaxy 2237+0305 using gravitational lensing
C. M. Trott, R. L. Webster
We have studied the mass distribution in the lensing galaxy 2237+0305 using constraints from both gravitational lensing and photometric and spectroscopic observations. We find that…
Recycling of ghost galaxies: The origin of giant HI ring around NGC 1533
Kenji Bekki, Warrick J. Couch, Emma Ryan-Weber +1
We propose that the giant HI ring recently discovered by HIPASS for S0 galaxy NGC 1533 is formed by unequal-mass merging between gas-rich LSB (low surface brightness: ``ghost'') ga…
Local Column Density Distribution Function from HI selected galaxies
Emma Ryan-Weber, Rachel Webster, Lister Staveley-Smith
The cross-section of sky occupied by a particular neutral hydrogen column density provides insight into the nature of Lyman-alpha absorption systems. We have measured this column d…
The Spectra of Red Quasars
Paul J. Francis, Catherine L. Drake, Matthew T. Whiting +2
We measure the spectral properties of a representative sub-sample of 187 quasars, drawn from the Parkes Half-Jansky, Flat-radio-spectrum Sample (PHFS). Quasars with a wide range of…