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Intracluster Planetary Nebulae in the Virgo Cluster
K. C. Freeman, M. Arnaboldi, M. Capaccioli +8
We briefly describe the properties of the confirmed spectroscopic sample of intracluster planetary nebulae recently discovered in the Virgo cluster. We find 23 bonafide intracluste…
New Galaxies Discovered in the First Blind HI Survey of the Centaurus A Group
G. D. Banks, M. J. Disney, P. M. Knezek +26
We have commenced a 21-cm survey of the entire southern sky (δ< 0 degrees, -1200 km/s < v < 12700 km/s) which is ''blind'', i.e. unbiased by previous optical information. In the pr…
The HI and Ionized Gas Disk of the Seyfert Galaxy NGC 1144 = Arp 118: A Violently Interacting Galaxy with Peculiar Kinematics
M. A. Bransford, P. N. Appleton, C. F. McCain +1
We present observations of the distribution and kinematics of neutral and ionized gas in NGC 1144, a galaxy that forms part of the Arp 118 system. Ionized gas is present over a hug…
The Formation and Evolution of Young Globular Clusters in NGC 3256
S. E. Zepf, K. M. Ashman, J. English +2
We present images of the recent galaxy merger NGC 3256 obtained with the WFPC2 of the Hubble Space Telescope in B and I filters. We show that there is a large population of more th…
The Nature of Boxy/Peanut-Shaped Bulges in Spiral Galaxies
M. Bureau, K. C. Freeman
We present a systematic observational study of the relationship between bars and boxy/peanut-shaped (B/PS) bulges. We first review and discuss proposed mechanisms for their formati…
Difference Image Analysis of Galactic Microlensing I. Data Analysis
C. Alcock, R. A. Allsman, D. Alves +18
This is a preliminary report on the application of Difference Image Analysis (DIA) to galactic bulge images. The aim of this analysis is to increase the sensitivity to the detectio…