https://doi.org/10.1051/epjconf/202226500015
Gas condensation in Brightest Group Galaxies unveiled with MUSE
Department of Physics and Astronomy, University of Kentucky, 505 Rose Street, Lexington, KY 40506, USA
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Published online: 7 September 2022
Abstract
How central galaxies in groups acquired their cold gas is still not fully understood. To unfold this unknown, we map the kinematics and distribution of the optical emission-line gas using MUSE observations of 18 optically selected local brightest group galaxies (BGGs). The observations reveal a distribution of gas morphologies, including complex networks of filaments extending up to ∼10 kpc to compact (<3 kpc) and extended (>5 kpc) disk-dominated structures. By exploring the thermodynamical properties of the X-ray atmospheres, we find most of the filaments and compact have are likely cooled out from the intragroup medium (IGrM).
© The Authors, Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
