Title: Warm ionized gas filaments in non-central early-type galaxies

Abstract: Filamentary multiphase gas is nearly ubiquitously found within the brightest cluster galaxies (BCG) of cool-core clusters and is likely related to the feeding and feedback of their supermassive black holes. Determining how such filaments form is crucial to understanding the interplay between baryon cycling, active galactic nucleus (AGN) feedback, and the evolution of early-type galaxies (ETG). However, BCGs account for only a small percentage of all ETGs and their gaseous atmospheres are thought to be strongly influenced by the extreme, dense cluster environments in which they reside. In this talk, I will present the results of our multiwavelength analysis of 126 nearby ETGs that sit outside of the immediate cores of galaxy groups and clusters (hereafter “non-central” ETGs) - which aims to bridge our current understanding of filamentary multiphase gas formation to the greater ETG population. Using archival VLT-MUSE observations, we find that 54 of these non-central ETGs have detected warm ionized gas. 35 out of these 54 sources host warm gas in the form of rotating disks, while the remaining 19 host filamentary warm gas - resemblant of that observed in BCGs. I will discuss how the MUSE data, in tandem with archival Chandra X-ray observations, allows us to infer that the warm filaments originate from the cooling, thermally-unstable hot halos. Furthermore, I will share the results of our emission line analysis that probe the ionizing mechanisms capable of powering the warm filaments.