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http://hdl.handle.net/20.500.12386/32464
Title: | Evidence for Mixing between ICM and Stripped ISM by the Analysis of the Gas Metallicity in the Tails of Jellyfish Galaxies | Authors: | FRANCHETTO, ANDREA Tonnesen, Stephanie POGGIANTI, Bianca Maria Vulcani, Benedetta GULLIEUSZIK, MARCO MORETTI, ALESSIA Smith, Rory IGNESTI, ALESSANDRO BACCHINI, CECILIA McGee, Sean TOMICIC, NEVEN MINGOZZI, MATILDE WOLTER, Anna Luisa Maria Müller, Ancla |
Issue Date: | 2021 | Journal: | THE ASTROPHYSICAL JOURNAL LETTERS | Number: | 922 | Issue: | 1 | First Page: | L6 | Abstract: | Hydrodynamical simulations show that the ram pressure stripping in galaxy clusters fosters a strong interaction between stripped interstellar medium (ISM) and the surrounding medium, with the possibility of intracluster medium (ICM) cooling into cold gas clouds. Exploiting the MUSE observation of three jellyfish galaxies from the GAs Stripping Phenomena in galaxies with MUSE (GASP) survey, we explore the gas metallicity of star-forming clumps in their gas tails. We find that the oxygen abundance of the stripped gas decreases as a function of the distance from the parent galaxy disk; the observed metallicity profiles indicate that more than 40% of the most metal-poor stripped clouds are constituted by cooled ICM, in qualitative agreement with simulations that predict mixing between the metal-rich ISM and the metal-poor ICM. | URI: | http://hdl.handle.net/20.500.12386/32464 | URL: | https://iopscience.iop.org/article/10.3847/2041-8213/ac3664 | ISSN: | 2041-8205 | DOI: | 10.3847/2041-8213/ac3664 | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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Franchetto_2021_ApJL_922_L6.pdf | Pdf editoriale | 2.72 MB | Adobe PDF | View/Open |
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