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- Macquarie UniversityAU873 papers
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43 papers · 2 filters
Correlations of near-infrared, optical and X-ray luminosity for early-type galaxies
S. C. Ellis, Ewan O'Sullivan
The relation between X-ray luminosity and near-infrared luminosity for early-type galaxies has been examined. Near-infrared (NIR) luminosities should provide a superior measure of…
Redshifts and Velocity Dispersions of Galaxy Clusters in the Horologium-Reticulum Supercluster
M. C. Fleenor, J. A. Rose, W. A. Christiansen +4
We present 118 new optical redshifts for galaxies in 12 clusters in the Horologium-Reticulum supercluster (HRS) of galaxies. For 76 galaxies, the data were obtained with the Dual B…
On the Detection of Artefacts in Spectro-astrometry
E. Brannigan, M. Takami, A. Chrysostomou +1
We demonstrate that artificial bipolar structure can be detected using spectro-astrometry when the point spread function (PSF) of a point source suffers distortion in a relatively…
XMM observes ClJ0152.7-1357: A massive galaxy cluster forming at merger crossroads at z=0.83
B. J. Maughan, S. C. Ellis, L. R. Jones +3
We present an analysis of a 50ks XMM observation of the merging galaxy cluster ClJ0152.7-1357 at z=0.83. In addition to the two main subclusters and an infalling group detected in…
Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574
J. Davy Kirkpatrick, Travis S. Barman, Adam J. Burgasser +4
While following up L dwarf candidates selected photometrically from the Two Micron All Sky Survey, we uncovered an unusual object designated 2MASS J01415823-4633574. Its optical sp…
A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (I): Preliminary Sample
Warren A. Reid, Quentin A. Parker
We report our initial discovery of 73 new planetary nebulae (PNe) in the Large Magellanic Cloud (LMC) following confirmatory 2dF spectroscopy on the Anglo-Australian Telescope (AAT…