Locations and Morphologies of Jellyfish Galaxies in A2744 and A370

Abstract

We present a study of the orbits, environments and morphologies of 13 ram-pressure stripped galaxies in the massive, intermediate redshift (z$\sim 0.3-0.4$) galaxy clusters A2744 and A370, using MUSE integral-field spectroscopy and HST imaging from the Frontier Fields Program. We compare different measures of the locations and morphologies of the stripped sample with a sample of 6 poststarburst galaxies identified within the same clusters, as well as the general cluster population. We calculate the phase space locations of all cluster galaxies and carry out a substructure analysis, finding that the ram-pressure stripped galaxies in A370 are not associated with any substructures, but are likely isolated infalling galaxies. In contrast, the ram-pressure stripped galaxies in A2744 are strictly located within a high-velocity substructure, moving through a region of dense X-ray emitting gas. We conclude that their ram-pressure interactions are likely to be the direct result of the merger between two components of the cluster. Finally, we study the morphologies of the stripped and poststarburst galaxies, using numerical measures to quantify the level of visual disturbances. We explore any morphological deviations of these galaxies from the cluster population, particularly the weaker cases which have been confirmed via the presence of ionised gas tails to be undergoing ram-pressure stripping, but are not strongly visually disturbed in the broad-band data. We find that the stripped sample galaxies are generally divergent from the general cluster sample, with poststarburst galaxies being intermediary in morphology between stripped galaxies and red passive cluster members.

27 pages, 17 figures

References in corpus (25)

• The MUSE second-generation VLT instrument
• The Evolution of Galaxy Structure over Cosmic Time
• The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection
• BUDHIES II: A phase-space view of HI gas stripping and star-formation quenching in cluster galaxies
• Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters: implications for high redshift studies
• Multi-scale cluster lens mass mapping I. Strong Lensing modelling
• MUSE sneaks a peek at extreme ram-pressure stripping events. I. A kinematic study of the archetypal galaxy ESO137-001
• Ram pressure feeding super-massive black holes
• An Atlas of MUSE Observations towards Twelve Massive Lensing Clusters
• Internal dynamics of the radio-halo cluster A2744
• GASP IV: A muse view of extreme ram-pressure stripping in the plane of the sky: the case of jellyfish galaxy JO204
• Hubble Frontier Fields: The Geometry and Dynamics of the Massive Galaxy Cluster Merger MACSJ0416.1-2403
• Ram pressure stripping candidates in the Coma Cluster: Evidence for enhanced star formation
• Probing 3D Structure with a Large MUSE Mosaic: Extending the Mass Model of Frontier Field Abell 370
• GASP XXIX -- Unwinding the arms of spiral galaxies via ram-pressure stripping
• A large H$\alpha$ survey of star formation in relaxed and merging galaxy cluster environments at $z\sim 0.15-0.3$
• The relevance of ram pressure stripping for the evolution of blue cluster galaxies as seen at optical wavelengths
• Observing ram pressure at work in intermediate redshift clusters with MUSE: the case of Abell 2744and Abell 370
• Jellyfish galaxy candidates in MACS J0717.5+3745 and thirty-nine other clusters of the DAFT/FADA and CLASH surveys
• The Grism lens-amplified survey from space (GLASS). VII. The diversity of the distribution of star formation in cluster and field galaxies at 0.3<z<0.7
• Towards robust determination of non-parametric morphologies in marginal astronomical data: resolving uncertainties with cosmological hydrodynamical simulations
• The Grism lens-amplified survey from space (GLASS). VIII. The influence of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7
• Abell 2111: An Optical and Radio Study of the Richest Butcher-Oemler Cluster
• Jellyfish: Resolving the kinematics of extreme ram-pressure stripping at $z\sim 0.3$
• The First Integral Field Unit Spectroscopic View of Shocked Cluster Galaxies

Cited by in corpus (6)

• The MUSE view of ram pressure stripped galaxies in clusters: the GASP sample
• DS+: a method for the identification of cluster substructures
• Early results from GLASS-JWST. XX: Unveiling a population of "red-excess'' galaxies in Abell2744 and in the coeval field
• Diagnostic diagrams for ram-pressure stripped candidates
• Gas Metallicity of Ram-Pressure Stripped Galaxies at Intermediate Redshift with MUSE Data
• Identification of ram pressure stripping features in galaxies using citizen science