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9 papers · 2 filters
Isolated Star Formation: A Compact HII Region in the Virgo Cluster
Ortwin Gerhard, Magda Arnaboldi, Kenneth C. Freeman +1
We report on the discovery of an isolated, compact HII region in the Virgo cluster. The object is located in the diffuse outer halo of NGC 4388, or could possibly be in intracluste…
2dF Spectroscopy of M104 Globular Clusters
Terry Bridges, Ken Freeman, Katherine Rhode +1
We present preliminary results of 2dF spectroscopy of globular clusters in The Sombrero (M104). We find 56 new clusters, and compile a total sample of 103 velocities combined with…
Narrow band imaging in [OIII] and Halpha to search for ICPNe in the Virgo cluster
M. Arnaboldi, K. C. Freeman, S. Okamura +17
We have identified intracluster planetary nebulae in a Virgo cluster core field by imaging with the Subaru Suprime-Cam through two narrow band filters centered at the redshifted wa…
The Large Scale Distribution of Neutral Hydrogen in the Fornax Region
Meryl Waugh, M. J. Drinkwater, R. L. Webster +22
Using HIPASS data, we have searched for HI in a ~25x25 sq.deg. region centred on the Fornax cluster. Within a velocity search range of 300 - 3700 km/s and a lower flux limit of ~40…
The Magellanic Stream, High-Velocity Clouds and the Sculptor Group
M. E. Putman, L. Staveley-Smith, K. C. Freeman +2
The Magellanic Stream is a 100°x 10°filament of gas which lies within the Galactic halo and contains ~ 2 x 10^8 \Msun of neutral hydrogen. We present data from the HI Parkes All Sk…
A Young Blue Tidal Stream in NGC 5128
Eric W. Peng, Holland C. Ford, Kenneth C. Freeman +1
Stellar streams in galaxy halos are the natural consequence of a history of merging and accretion. We present evidence for a blue tidal stream of young stars in the nearest giant e…