English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

It is well known that galaxies falling into clusters can experience gasstripping due to ram-pressure by the intra-cluster medium (ICM). The mostspectacular examples are galaxies with extended tails of optically-brightstripped material known as "jellyfish". We use the first large homogeneouscompilation of jellyfish galaxies in clusters from the WINGS and OmegaWINGSsurveys, and follow-up MUSE observations from the GASP MUSE programme toinvestigate the orbital histories of jellyfish galaxies in clusters andreconstruct their stripping history through position vs. velocity phase- spacediagrams. We construct analytic models to define the regions in phase-spacewhere ram-pressure stripping is at play. We then study the distribution ofcluster galaxies in phase-space and find that jellyfish galaxies have onaverage higher peculiar velocities (and higher cluster velocity dispersion)than the overall population of cluster galaxies at all clustercentric radii,which is indicative of recent infall into the cluster and radial orbits. Inparticular, the jellyfish galaxies with the longest gas tails reside very nearthe cluster cores (in projection) and are moving at very high speeds, whichcoincides with the conditions of the most intense ram-pressure. We concludethat many of the jellyfish galaxies seen in clusters likely formed via fast(~1- 2 Gyr), incremental, outside-in ram-pressure stripping during first infallinto the cluster in highly radial orbits.

GASP IX. Jellyfish galaxies in phase-space: an orbital study of intense ram-pressure stripping in clusters