LoTSS Jellyfish Galaxies III. The first identification of jellyfish galaxies in the Perseus cluster
Ian D. Roberts, Reinout J. van Weeren, Roland Timmerman, Andrea, Botteon, Marie-Lou Gendron-Marsolais, Alessandro Ignesti, Huub J.A., Rottgering

TL;DR
This paper reports the first identification of jellyfish galaxies in the Perseus cluster, using radio and optical data to analyze their morphology, spectral indices, and star formation activity, highlighting ram pressure stripping effects.
Contribution
First detection of jellyfish galaxies in Perseus cluster, combining LOFAR and VLA data to study their radio tails, spectral indices, and ram pressure induced star formation.
Findings
Four jellyfish galaxies identified in Perseus cluster.
Steep spectral indices in stripped tails indicate aged cosmic rays.
Enhanced star formation on leading edges due to ram pressure.
Abstract
In this paper we report the first identification of jellyfish galaxies in the Perseus cluster (Abell 426). We identified four jellyfish galaxies (LEDA 2191078, MCG +07-07-070, UGC 2654, UGC 2665) within the central () of Perseus based on the presence of one-sided radio continuum tails that were detected at by the LOw Frequency ARray (LOFAR). The observed radio tails, as well as the orientation of morphological features in the rest-frame optical, are consistent with these four galaxies being impacted by ram pressure stripping as they orbit through the Perseus intracluster medium. By combining the LOFAR imaging at 144 MHz with 344 MHz imaging from the Karl G. Jansky Very Large Array, we derived spectral indices for the disks and the stripped tails of these jellyfish galaxies. We show that the spectral…
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