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Gas Rich Mergers in Disk Formation
Chris B. Brook, Vincent Veilleux, Daisuke Kawata +2
In order to explain disk galaxy formation within the hierarchical structure formation, it seems that gas rich mergers must play an important role. We review here our previous studi…
Galaxy Groups: Proceedings from a Swinburne University Workshop
Virginia A. Kilborn, Kenji Bekki, Sarah Brough +6
We present the proceedings from a 2-day workshop held at Swinburne University on the 24th-25th of May 2005. The workshop participants highlighted current Australian research on bot…
The Evolving Structure of Galactic Disks
Hugo Martel, Chris Brook, Sean McGee +2
Observations suggest that the structural parameters of disk galaxies have not changed greatly since redshift 1. We examine whether these observations are consistent with a cosmolog…
Studying Galaxy Formation in Loose Galaxy Groups
D. J. Pisano, D. G. Barnes, B. K. Gibson +3
We present the results of our HI survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescop…
On the origin of anomalous velocity clouds in the Milky Way
Tim W. Connors, Daisuke Kawata, Jeremy Bailin +2
We report that neutral hydrogen (HI) gas clouds, resembling High Velocity Clouds (HVCs) observed in the Milky Way (MW), appear in MW-sized disk galaxies formed in high-resolution L…
N-body simulations of the Magellanic Stream
Tim W. Connors, Daisuke Kawata, Brad K. Gibson
A suite of high-resolution N-body simulations of the Magellanic Clouds -- Milky Way system are presented and compared directly with newly available data from the HI Parkes All-Sky…
The Stellar Halo Metallicity - Luminosity Relationship for Spiral Galaxies
Agostino Renda, Brad K. Gibson, Mustapha Mouhcine +4
The stellar halos of spiral galaxies bear important chemo-dynamical signatures of galaxy formation. We present here the analysis of 89 semi-cosmological spiral galaxy simulations,…
The Importance of Interactions for Mass Loss from Satellite Galaxies in Cold Dark Matter Haloes
Alexander Knebe, Chris Power, Stuart P. D. Gill +1
We investigate the importance of interactions between dark matter substructures for the mass loss they suffer whilst orbiting within a sample of high resolution galaxy cluster mass…
A Catalogue of Field Horizontal Branch Stars Aligned with High Velocity Clouds
Christopher Thom, Brad K. Gibson, Norbert Christlieb
We present a catalogue of 430 Field Horizontal Branch (FHB) stars, selected from the Hamburg/ESO Survey (HES), which fortuitously align with high column density neutral hydrogen (H…
The HIPASS Catalogue: III - Optical Counterparts & Isolated Dark Galaxies
Marianne T. Doyle, M. J. Drinkwater, D. J. Rohde +38
We present the largest catalogue to date of optical counterparts for HI radio-selected galaxies, Hopcat. Of the 4315 HI radio-detected sources from the HI Parkes All Sky Survey (Hi…
Kinematics of the Galactic Halo from Horizontal Branch stars in the Hamburg/ESO Survey
Christopher Thom, Chris Flynn, Michael S. Bessell +6
Large samples of Field Horizontal Branch (FHB) stars make excellent tracers of the Galactic halo; by studying their kinematics, one can infer important physical properties of our G…
Evolving Disks in Cold Dark Matter Cosmology
C. B. Brook, H. Martel, B. K. Gibson +1
Despite having entered the era of "precision cosmology," the formation of galaxies within the favored CDM cosmological paradigm remains problematic. By relating our N-body/smooth p…
The Emergence of the Thick Disk in a CDM Universe II: Colors and Abundance Patterns
Chris B. Brook, Brad K. Gibson, Hugo Martel +1
The recently emerging conviction that thick disks are prevalent in disk galaxies, and their seemingly ubiquitous old ages, means that the formation of the thick disk, perhaps more…
Massive elliptical galaxies in X-rays: the role of late gas accretion
Antonio Pipino, Daisuke Kawata, Brad K. Gibson +1
We present a new chemical evolution model meant to be a first step in the self-consistent study of both optical and X-ray properties of elliptical galaxies. Detailed cooling and he…