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The Toomre Sequence Revisited with HST/NICMOS: Nuclear Brightness Profiles and Colors of Interacting and Merging Galaxies
Joern Rossa, Seppo Laine, Roeland P. van der Marel +4
We discuss the near-infrared properties of the nuclei in the 11 merging galaxies of the Toomre sequence, based on high spatial resolution J, H, and K imaging data using NICMOS onbo…
The L_x-sigma Relation For Poor Groups of Galaxies
Marc E. Zimer, John S. Mulchaey, Ann I. Zabludoff
We use a sample of 20 poor groups of galaxies to study the low L_x tail of the L_x-sigma relationship. We have obtained redshifts for fainter members and deep X-ray imaging of thes…
HST Observations of the Nuclear Regions of the Toomre Sequence of Merging Galaxies
S. Laine, R. P. van der Marel, T. Boeker +3
We present first results from an HST WFPC2 imaging and STIS spectroscopy program to investigate the structural and star forming properties in the nuclear regions of the Toomre Sequ…
A New Look at Poor Groups of Galaxies
Ann I. Zabludoff
We use a new fiber spectroscopic survey of 12 nearby, poor groups of galaxies to examine the dynamics and evolution of galaxies in these common, but poorly studied, environments. S…