| Autor: |
Deb, Tirna, Verheijen, Marc A W, Poggianti, Bianca M, Moretti, Alessia, Hulst, J M van der, Vulcani, Benedetta, Ramatsoku, Mpati, Serra, Paolo, Healy, Julia, Gullieuszik, Marco, Bacchini, Cecilia, Ignesti, Alessandro, Müller, Ancla, Zabel, Nikki, Luber, Nicholas, Jaffë, Yara L, Gitti, Myriam |
| Předmět: |
|
| Zdroj: |
Monthly Notices of the Royal Astronomical Society; Oct2022, Vol. 516 Issue 2, p2683-2696, 14p |
| Abstrakt: |
We present MeerKAT H i observations of six jellyfish candidate galaxies (JFCGs) in the galaxy cluster, A2626. Two of the six galaxies JW100 and JW103, which were identified as JFCGs from B-band images, are confirmed as jellyfish galaxies (JFGs). Both of the JFGs have low H i content, reside in the cluster core, and move at very high velocities (∼ 3σ cl ). The other JFCGs, identified as non-jellyfish galaxies, are H i rich, with H i morphologies revealing warps, asymmetries, and possible tidal interactions. Both the A2626 JFGs and three other confirmed JFGs from the GASP sample show that these galaxies are H i stripped but not yet quenched. We detect H i , H α, and CO(2-1) tails of similar extent (∼50 kpc) in JW100. Comparing the multiphase velocity channels, we do not detect any H i or CO(2-1) emission in the northern section of the tail where H α emission is present, possibly due to prolonged interaction between the stripped gas and the intracluster medium. We also observe an anticorrelation between H i and CO(2-1), which hints at an efficient conversion of H i to H2 in the southern part of the tail. We find that both ram-pressure stripping and H i -to-H2 conversion are significant depletion channels for atomic gas. H i -to-H2 conversion is more efficient in the disc than in the tail. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
