15 papers · 1 filter
Properties of three gas-rich dwarfs in the Centaurus A group
M. Grossi, M. J. Disney, B. J. Pritzl +5
We present HST/WFPC2 observations (F555W, F814W) and ATCA high resolution HI maps of three gas-rich dwarf galaxies in the Centaurus A group discovered in two blind 21-cm surveys (H…
Extragalactic Star Clusters: Speculations on the Future
John S. Gallagher, Eva K. Grebel
We discuss the future possibilities for extragalactic star cluster research with the expected new ground-based and space-based telescopes and instrumentation. Significant gains are…
Populations of Dwarfs in Clusters of Galaxies: Environmental Connections
John S. Gallagher, Christopher J. Conselice, Rosemary F. G. Wyse
Despite their apparent fragile appearance, dwarf spheroidals are the most common galaxy type in clusters. In this paper we consider some of the issues associated with two major mod…
Five Years of Magellanic Clouds Research: A Newsletter Editors' Perspective
Eva K. Grebel, You-Hua Chu, John S. Gallagher +1
We analyze the topical and demographic evolution of Magellanic Clouds research over the past five years based on submissions of abstracts of refereed papers to the electronic Magel…
Star Formation Modes in Low-Mass Disk Galaxies
J. S. Gallagher, L. D. Matthews
Low-mass disk galaxies with well-organized structures are relatively common in low density regions of the nearby Universe. They display a wide range in levels of star formation act…
H-alpha Velocity Fields of Normal Spiral Disks
David R. Andersen, M. A. Bershady, L. S. Sparke +4
We present H-alpha velocity fields for a sample of nearly face--on spiral galaxies observed with DensePak on the WIYN telescope. We combine kinematic inclinations and position angl…