Hot and Cold Galactic Gas in the NGC 2563 Galaxy Group
Jesper Rasmussen, Xue-Ning Bai, John S. Mulchaey, J. H. van Gorkom,, Tesla E. Jeltema, Ann I. Zabludoff, Eric Wilcots, Paul Martini, Duane Lee,, Timothy P. Roberts

TL;DR
This study investigates hot and cold gas removal processes in the NGC 2563 galaxy group using X-ray and radio observations, revealing evidence of ram pressure stripping and tidal interactions affecting galaxy evolution.
Contribution
It provides detailed multi-wavelength observations of gas stripping phenomena in a nearby galaxy group, highlighting the roles of ram pressure and tidal forces in gas removal.
Findings
Hot gas halos are efficiently stripped near the group core.
Moderate HI mass loss observed compared to field galaxies.
Unusual spatial distribution of HI detections suggests morphological segregation.
Abstract
The role of environmentally induced gas stripping in driving galaxy evolution in groups remains poorly understood. Here we present extensive Chandra and Very Large Array mosaic observations of the hot and cold interstellar medium within the members of the nearby, X-ray bright NGC 2563 group, a prime target for studies of the role of gas stripping and interactions in relatively small host halos. Our observations cover nearly all group members within a projected radius of 1.15 Mpc (~1.4 R_vir) of the group center, down to a limiting X-ray luminosity and HI mass of 3e39 erg/s and 2e8 M_sun, respectively. The X-ray data are consistent with efficient ram pressure stripping of the hot gas halos of early-type galaxies near the group core, but no X-ray tails are seen and the limited statistics preclude strong conclusions. The HI results suggest moderate HI mass loss from the group members when…
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